The Pedag Pascha Wool Insoles are designed with 100% all natural genuine shearling lambs wool with an all natural cork bottom for extra insulation. They are a full-length, flat cushioned insole with neatly stitched edges for added durability. The Pedag Pascha Insoles are ideal for Men's and Women's casual and dress shoes, slippers, & boots. They are a popular choice for UGG boots, too. Product Features: Flat cushion insole Full-length footbed 100% shearling lambs wool All-natural cork sole for insulation Neatly stitched edges for added durability Thickness at forefoot: 3.25 mm Thickness at heel: 3.25 mm