Replacement Insoles for UGG Women Slipper and Boot Shoes, Sheepskin InsoleReplacement Insoles for UGG Women Slipper and Boot Shoes, Sheepskin Insole Compatibility: These insoles are designed to be compatible with UGG shoes, and they also work well with a wide variety of other shoes and slippers. Choose the size that matches your shoe size; for half sizes, select the smaller half (e. g., choose W9 insoles for W9. 5 shoes). 15MM Natural Sheepskin: Sheepskin traps body heat, helping to reduce heat loss and providing