Wool Fleece Bootees... These bootees are made from wool pile fleece and as a result, they are soft, warm and gentle on the skin. The velcro fastening allows for swollen or outsized feet and as the toes are not covered, they allow the feet to breath. Machine washable. Small - (Up to size 4) Medium - (Size 5 - 9) Large - (Size 10 and over).