Top quality Adult Fleece Rainboot Liners that will ensure your feet are nice and warm all year round. No uncomfortable seams on sole of foot. They are worn as socks with the seam to the inside of your rain boot for ultimate comfort. Fully washable and hard wearing Sizes are as follows: Small (Shoe Sizes 5-7) Medium (Shoe Sizes 7-9) Large (Shoe Sizes 9-11) XL (Shoe Sizes 11-13)