Pack of Two Pairs. In light coloured Sheepskin both these types of insoles are made from the pure fleece, they have a deep wool, and are simply real sheepskin - all natural. The standard insoles are ideal to wear, fully washable, using wool detergent. Do not use a Biological detergent with any sheepskin product. The backed insoles should only be hand-washed only if strictly necessary. STANDARD INSOLES:Please be aware these are not like many other insoles on the market, they are designed to be as soft as possible, without a stiff structure to the back, without latex/foam/bonded back. If you need structure within your insoles, pick these! COLOUR AND TYPE OF WOOL (E.G CURLY/STRAIGHT) MAY VARY AS SHEEPSKIN IS A NATURAL PRODUCT.