WARMTH & COMFORT: With 2.5 cm thick 100% premium quality sheepskin material, the wool womens insoles offer gorgeous comfort and warmth to your feet whether in cold winter or rainy days. Relief pressure and pain from shoes. SHOCK ABSORPTION & BREATHABLE: The PU sports insole layer with unique honeycomb is designed specifically to fully absorb shock and reduce stress on feet with every step. The bottom layer with ventilation holes can reduce odor and absorb the moisture produced by feet. PERFECT HAND WORKMANSHIP: Tightly stitched to the sheepskin, the wool felt layer and PU bottom adheres firmly to the soles. The fleece will not come off and leave lint on your socks. And the insole has a height increasing function making you invisibly height up to 3cm. DURABILITY & SUPPORT: Thick and fluffy fleece with high-density felt keep the insoles from going flat as pancakes even though it has used for many times. Additional memory foam pad under heel provides the best cushion ever and prevent injuries resulting from wrong feet support. They are ideal for all your UGG boots, work boots, wide-fitting lace-up shoes, sports shoes, tennis and golf shoes.