Cat Footwear Men's Diagnostic Hi St Work Boot

4.5 out of 5 stars 3,674 ratings
Price: $149.99 $159.95 Free Returns on some sizes and colors

Dark Beige
Size Chart
US Regular
Brand SizeEU SizeUK SizeHeel to toe (in)
43738.7
4.537.53.58.9
53849.1
5.538.54.59.2
63959.4
6.539.55.59.7
74069.8
7.540.56.510
841710.2
8.541.57.510.4
942810.6
9.542.58.510.8
1043911
10.543.59.511.2
11441011.4
11.544.510.511.6
12451111.8
13461212.2
14471312.6

Product details

Fabric type
100% Leather
Origin
Imported
Sole material
Rubber
Shaft height
Ankle

About this item

  • Insulated work boot in waterproof leather featuring antiqued lacing hardware and contrast tone at toe and collar
  • 200g Thinsulate insulation
  • Steel toe
  • Removable EVA foam insert with gel technology
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From the manufacturer

mens steel toe work boots

Diagnostic Hi ST

  • ASTM F2413-18 Steel Toe protects against impact or compression
  • ASTM F2413-18 Electrical Hazard Protection rated to protect against open circuits up to 600 volts in dry conditions
  • Waterproof Leather Upper keeps feet dry and protected
  • Nylon Mesh Lining for added breathability and comfort
  • Removable Perforated EVA Insert with Gel Technology for comfort and additional shock absorption
  • Insulated with 200 Grams of Thinsulat patented thermal technology that insulates against the cold, keeping feet warm and comfortable while tackling extreme conditions
  • T901 Outsole performs against oil, water, and abrasion resistant
  • SRX, Slip-resistant Rubber Outsole reduces the risk of slips and falls on low tractions surfaces

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Steel Toe

The most trusted safety toe option with heavy duty steel.

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Waterproof

Keep the wet out with waterproof leathers and seam sealed waterproof liners.

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Electrical Hazard Protection

Protects against open circuits up to 600 volts in dry conditions.

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Insulated

Light, highly breathable insulation to keep your feet warm and comfortable for cold weather pursuits.

Diagnostic Hi St
Outline
Wheelbase St
Threshold Wp St
Buying Options
Customer Reviews
4.5 out of 5 stars 3,674
—
4.3 out of 5 stars 2,420
4.4 out of 5 stars 12,518
Price $159.95 — no data — no data $109.95
Toe Type Steel Toe Soft Toe Steel Toe Steel Toe
Waterproof ✓ no data no data ✓
Insulated ✓ no data no data no data
Electrical Hazard Protection ✓ ✓ ✓ ✓
Upper Material Waterproof Leather Upper keeps feet dry and protected Full Grain Leather Upper Nubuck Leather Upper delivers long-term durability and protection Waterproof Leather Upper keeps feet dry and protected
mens work boots, work boots, work boots for men

Cat Footwear

At Cat Footwear, we come from a world of possibility. Where industriousness and curiosity fuel the opportunity we see around us. A world where we can put in the effort, commit to the grind and turn challenge into something meaningful. We live up to both the hardworking spirit of the Cat brand and the millions of people around the globe who trust our brand. What started as a small collection of rugged work boots has been built up to a wide range of footwear, including workboots and casual shoes for men, women and children.

Product details

  • Product Dimensions ‏ : ‎ 14.15 x 10.75 x 5 inches; 2.19 Pounds
  • Item model number ‏ : ‎ P89940
  • Department ‏ : ‎ mens
  • Date First Available ‏ : ‎ August 14, 2009
  • Manufacturer ‏ : ‎ Caterpillar
  • ASIN ‏ : ‎ B0023RSKJQ
  • Customer Reviews:
    4.5 out of 5 stars 3,674 ratings

Product Description

A brawny boot, this style can take a beating. The Diagnostic Hi Waterproof is a steel toe work boot that is built from the ground up and powered by ERGO, a comfort system that is engineered to integrate stability, flexibility, and comfort. This 6” boot is anatomically accurate to deliver on maximum comfort and continue to provide the durability expected with the Cat brand. The Diagnostic Hi offers industry rated steel toe and electrical hazard protection, and a best-in-class slip-resistant outsole. It’s waterproof and insulated with 200 grams of thermal technology, guaranteeing you stay dry, warm, and comfortable. From all over protection to comfort throughout, this style delivers on everything you need in a work boot.

Top Brand: CAT

Highly Rated
100K+ customers rate items from this brand highly
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Customer reviews

4.5 out of 5 stars
3,674 global ratings

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Customers say

Customers find these work boots to be well-made with a solid rubber base and appreciate that they keep feet dry in wet weather, with one customer noting they stay water-tight for months. The boots are comfortable, with one customer mentioning they don't feel like boulders when walking or hiking, and they perform well in winter conditions. While customers consider them worth the price, opinions about fit are mixed, with some finding them a nice fit while others say they run large.

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Boot qualityComfortDurabilityWaterproofnessValue for moneyFeet warmthWork performanceFit
401 customers mention "Boot quality"378 positive23 negative

Customers find these work boots to be of good quality, with one customer specifically noting the well-designed lace eyelets.

"...I think it's the insole that's done. Overall a very good boot, reasonably comfortable, and they are a true fit. They're still waterproof/resistant...." Read more

"...Definitely not Caterpillar's fault... these boots look nice and seem to be of great quality. I just have funny feet...." Read more

"Excelente producto lo recomiendo" Read more

"...Pro: These boots look pretty good, quality seems on par with Cat products (minus being made in China) which means they should last a good couple..." Read more

377 customers mention "Comfort"334 positive43 negative

Customers find these work boots comfortable, noting that their feet don't hurt while wearing them, and one customer mentions they don't feel heavy on their feet.

"...They have lasted about a year for each pair. Oh so comfortable." Read more

"Really comfortable with inserts and definitely sturdy work boots! I work around oil and grease spots on the flooring, definitely slip resistant!" Read more

"...Took few weeks to break in and was comfortable. Bought couple more boots after this but always come back to this since it was the most comfortable...." Read more

"...They require very little break in time and are comfortable to wear all day with extensive walking on all surface types and extensive climbing up and..." Read more

345 customers mention "Durability"261 positive84 negative

Customers find these work boots durable, with a solid rubber base and no break-in period required.

"...They have lasted about a year for each pair. Oh so comfortable." Read more

"Really comfortable with inserts and definitely sturdy work boots! I work around oil and grease spots on the flooring, definitely slip resistant!" Read more

"...Took few weeks to break in and was comfortable. Bought couple more boots after this but always come back to this since it was the most comfortable...." Read more

"...I purchased mine in April and the laces are already shredded (one star deduction since it didn’t even last 6 months)." Read more

142 customers mention "Waterproofness"104 positive38 negative

Customers find the boots waterproof, keeping feet dry in wet weather and snow, with socks remaining dry.

"...It is waterproof and super durable considering I wore it everyday for 12 years. Took few weeks to break in and was comfortable...." Read more

"...They're still waterproof/resistant. They hold up well in the heat (I live and work in the desert)...." Read more

"Good build quality. Nice to use for daily wear. No problems in light rain." Read more

"...I rated 4 stars instead of 5 because the waterproof aspect has become obsolete and that was the main reason I purchased them...." Read more

99 customers mention "Value for money"82 positive17 negative

Customers find the boots well worth the price, with one mentioning they last longer than comparable options.

"...Summary: I'd recommend these boots due to price point, appearance and less aggressive traction for day to day usage that doesn't require extreme..." Read more

"...Good buy." Read more

"...as expected with as much as I move around in them, but they were worth the price...." Read more

"...great boot for the money. i will buy them again." Read more

75 customers mention "Feet warmth"57 positive18 negative

Customers find these boots keep their feet warm, particularly on very cold days, with one customer noting they work well in the shop during winter.

"...Still i do like them somewhat. They offer some cold protection only I noticed cold will work through from the soles, I was standing in place outside..." Read more

"...have great support, don't get TOO hot, but can also wear them in the shop in the winter without being too too cold...." Read more

"...They fit as expected and were warm comfortable and dry...." Read more

"...during the summer, in the winter my feet get cold because the insulation is poor...." Read more

62 customers mention "Work performance"54 positive8 negative

Customers find these work boots perform well, with one customer noting they last about a year.

"...Overall @ $100 these boots so far have performed nicely at a very reasonable price...." Read more

"...CAT nailed these steelies. Nice work...." Read more

"...Really a great all around boot. I finally wore out the first pair." Read more

"This is a great work boot, I’ve had it for about 2 months now. And work 8 hours a day in the construction union!..." Read more

282 customers mention "Fit"188 positive94 negative

Customers have mixed opinions about the boots' fit, with some finding them nice while others note they run a little large and the width is almost too big.

"...Overall a very good boot, reasonably comfortable, and they are a true fit. They're still waterproof/resistant...." Read more

"...into the side of my toes with each step, but I had plenty of room to move my toes around when I tried these on (even wearing thick wool socks!)...." Read more

"...performing on the ground work. Will mention that they do come large in size and I plan to buy more pairs while dropping down a half size at a..." Read more

"...My toes have alot of space, and there's absolutely no rubbing, and after wearing them ALL day, they felt fantastic...." Read more

This thing lasted 12 years of abuse through my entire career
5 out of 5 stars
This thing lasted 12 years of abuse through my entire career
Bought this boots fresh out of college after getting construction inspector job 12 years ago for $89. It is waterproof and super durable considering I wore it everyday for 12 years. Took few weeks to break in and was comfortable. Bought couple more boots after this but always come back to this since it was the most comfortable. It is coming to end of it's life though with sole crumbling and detaching from sides.
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Top reviews from the United States

  • dennis l fulin
    5.0 out of 5 stars Comfortable.
    Reviewed in the United States on May 5, 2025
    Size: 11 WideColor: Dark BeigeVerified Purchase
    You will not regret buying this boot this my third pair broken in out of box on my feet 10 to 11 hours a day. They have lasted about a year for each pair. Oh so comfortable.
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  • Eric
    5.0 out of 5 stars Really good work boot for the money
    Reviewed in the United States on May 4, 2025
    Size: 11 WideColor: Dark BeigeVerified Purchase
    Really comfortable with inserts and definitely sturdy work boots! I work around oil and grease spots on the flooring, definitely slip resistant!
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  • Amazon J
    5.0 out of 5 stars This thing lasted 12 years of abuse through my entire career
    Reviewed in the United States on February 10, 2025
    Size: 10 WideColor: Dark BeigeVerified Purchase
    Bought this boots fresh out of college after getting construction inspector job 12 years ago for $89. It is waterproof and super durable considering I wore it everyday for 12 years. Took few weeks to break in and was comfortable. Bought couple more boots after this but always come back to this since it was the most comfortable. It is coming to end of it's life though with sole crumbling and detaching from sides.
    Customer image
    Amazon J
    5.0 out of 5 stars
    This thing lasted 12 years of abuse through my entire career

    Reviewed in the United States on February 10, 2025
    Bought this boots fresh out of college after getting construction inspector job 12 years ago for $89. It is waterproof and super durable considering I wore it everyday for 12 years. Took few weeks to break in and was comfortable. Bought couple more boots after this but always come back to this since it was the most comfortable. It is coming to end of it's life though with sole crumbling and detaching from sides.
    Images in this review
    Customer image
    One person found this helpful
    Helpful
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  • LoneStar
    4.0 out of 5 stars Good boots
    Reviewed in the United States on November 26, 2021
    Size: 9Color: Dark BeigeVerified Purchase
    UPDATE: After owning these boots, wearing them 6 days a week, 10 to 12 hours a day, they are still in great condition. I work in the desert, walk on many uneven surfaces, rocks, steel, the soles are still in good condition, the leather remains in good condition, they're even still water proof. My problem is they still cause major callous on the outside of my big toes, too the point that my toes hurt bad. They're also starting to cause my middle toes to hurt on my dominate foot along with heel pain on the very rear of my dominate foot heel.
    Overall I'd still highly recommend these boots. They require very little break in time and are comfortable to wear all day with extensive walking on all surface types and extensive climbing up and down all day. Maybe replace the insole every few months, which I did not.

    I'm now going to try the Timberland Pro Boondocks to see how they hold up. But I still highly recommend these Cat boots.

    After about 6 months of wearing these working 6 days a week, the comfort is fading fast. The boots are still holding up though. I think it's the insole that's done. Overall a very good boot, reasonably comfortable, and they are a true fit. They're still waterproof/resistant. They hold up well in the heat (I live and work in the desert).

    The only downfall is they will cause massive callous on the outside of your big toes. Not sure why, since I don't notice my big toes rubbing anything in the boot.

    I would recommend these boots.
    9 people found this helpful
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  • Manuel Isaac
    5.0 out of 5 stars Excellent boots
    Reviewed in the United States on March 23, 2025
    Size: 11Color: Dark BeigeVerified Purchase
    Good build quality. Nice to use for daily wear. No problems in light rain.
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  • Carlos Mauricio Grijalva Mejia
    5.0 out of 5 stars Excelente
    Reviewed in the United States on March 20, 2025
    Size: 9Color: Dark BeigeVerified Purchase
    Excelente
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  • howard
    5.0 out of 5 stars Better than most I have had.
    Reviewed in the United States on January 21, 2023
    Size: 9 WideColor: Dark BeigeVerified Purchase
    Well I like the comfort of this boot. Which matters when you are on concrete for much of the day, I am using them on 59 year old feet and with that will always have times that during the day are uncomfortable. Still i do like them somewhat. They offer some cold protection only I noticed cold will work through from the soles, I was standing in place outside for a time yesterday and had to keep shifting weight and lifting my feet because the asphalt was freezing cold. Once you are moving everything seems okay. I coated my boots with mink oil since its winter in New England and our warmer winters are bringing a more wet snow than used to be. (This was just to add a second outside layer of water protection). I work from on my knees quite a bit and the sole of the boot has an extra flex feature which allows the foot to curl up more than conventional boots which is good for overall comfort while performing on the ground work.
    Will mention that they do come large in size and I plan to buy more pairs while dropping down a half size at a time until they fit to perfection. I will use this larger pair for winter to allow room for thermal socks and use a tighter fitting pair for summer work with lighter weight socks. I would buy more pairs because I will always need more work boots.
    3 people found this helpful
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  • Mario Rivera
    5.0 out of 5 stars Excelente
    Reviewed in the United States on February 23, 2025
    Size: 11.5Color: Dark BeigeVerified Purchase
    Muy comodos
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    Mario Rivera
    5.0 out of 5 stars
    Excelente

    Reviewed in the United States on February 23, 2025
    Muy comodos
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Top reviews from other countries

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  • Nabi Omer
    1.0 out of 5 stars Damage shoes
    Reviewed in Saudi Arabia on January 15, 2025
    Size: 9.5Color: Dark BeigeVerified Purchase
    I purchase this shoes before 55 days (approximately two months) within this time shoes gets damaged. I notice there is very poor quality material inside the shoes.
    Report
  • Juan M.
    5.0 out of 5 stars Buena calidad y mejor servicio
    Reviewed in Mexico on June 21, 2024
    Size: 10Color: Dark BeigeVerified Purchase
    Son botas de buena calidad en materiales y excelente elaboracion, la entrega fue rapida
    Customer image
    Juan M.
    5.0 out of 5 stars
    Buena calidad y mejor servicio

    Reviewed in Mexico on June 21, 2024
    Son botas de buena calidad en materiales y excelente elaboracion, la entrega fue rapida
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  • Miguel C.
    5.0 out of 5 stars Excelente
    Reviewed in Mexico on January 9, 2025
    Size: 10 WideColor: Dark BeigeVerified Purchase
    Muy buena calidad y durabilidad
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  • Stewart Marsden
    5.0 out of 5 stars Money well spent
    Reviewed in the United Kingdom on March 16, 2021
    Size: 11.5Color: Dark BeigeVerified Purchase
    These are very comfortable and well-built boots. they took a little breaking in, but that was to be expected. I will need to wear these every day and anticipate no issues.
    Report
  • Peter Giannoulis
    5.0 out of 5 stars Great boots!!!
    Reviewed in Canada on January 14, 2017
    Size: 13 WideColor: Dark BeigeVerified Purchase
    Very comfortable boots! And yes, they are waterproof! I dunked them in a deep stream of water. No water permeated through!
    Report