about this projectWarm and Comfortable: Made of 2.5cm thick high-quality sheepskin material, the wool women's insoles can provide gorgeous comfort and warmth for your feet whether in cold winter or rainy days. Relieves pressure and pain from shoes.Shock Absorption and Breathability: The PU sports insole layer adopts a unique honeycomb structure, which is specially designed to fully absorb impact and reduce the pressure on your feet with each step. The vented bottom layer reduces odor and absorbs moisture from your feet.Outer Material: WoolPerfect Handmade Workmanship: Tightly stitched on sheepskin, wool felt layer and PU bottom are firmly adhered to the sole. The fleece won't shed or leave lint on your socks. And the insole has a heightening function, allowing you to increase the height by 3cm invisible.Size: size 38, total length about 24cmDURABILITY AND SUPPORT: Thick, fluffy wool and high-density felt keep the insole from going flat like a pancake, even after it's been used many times. Extra memory foam padding under the heel provides the best cushioning ever and prevents injuries from incorrect foot support. They are ideal for all your UGG boots, work boots, wide lace ups, sneakers, tennis shoes and golf shoes.