【High Cotton Socks Keep Foot Warm】Made of premium Cotton ( 86.1% Cotton,12.2% Chinlon, 1.7% Spandex), very warm and durable for wear. Cotton is scientifically proven to be the most natural insulation for ski socks. The high component cotton makes our socks more warmer than most of socks in the market. Thus your foot won't be cold all day.【All Day Comfort】Wool snow socks added reinforced toe and heel, which provides additional cushion for comfort and right thickness to allow the ski socks to fit comfortably in ski boots or snowboard boots, but effectively relieving foot friction and fatigue. Ski socks is moisture wicking, and preventing any buildup of sweat. They are breathable and thermal regulating to prevent blisters and sore on your toes during skiing.【Knee High Length Warm Socks】Flexible warm socks is knee high length, could cover your calf all around, and helps keeping your foot always at optimal level warmth. In addition, it don't fall down or loose after long time wear.【Arch Support & Y Type Heel】With hand stitching, women men winter ski socks is seamless feeling. With Y-type stitching of exquisite workmanship heel design and elastic arch support, full wraping your heel and toes, and greatly decreasing foot pressure, perfeclty fit for any sports of skiing, snowboarding, hiking, cycling, riding, baseball, etc.【Great Christmas Gift Idea】Warm ski socks protect your all round foot, and keep your foot warm all day. The warm socks come with 3 pair in black/ Blue/ Pink 3 color, don't need to waste time on selecting colors. Also is a great Christmas gift set for ski enthusiast, couple, family, and friends in cold winter. KUYOU Provide 30 Days Money Back to All Customers if there is any quality problem of our product.