-【Warm & Comfy】High-quality cotton fabric with a thick terry design make it softer and more comfortable to wear, firmly locks the heat, and keep little feet toasty in winter; OTC design winter socks keep kids' calf warm and provide better protection, reducing the damage caused by ski boot friction to the calves.-【Stretchy & Breathable】 Made of high stretchy fabric with moderately compressed, helps to stably fit skin; Fast moisture wicking, and good air permeability, keep kids' feets dry during winter activities, like skiing, snowboarding, and ice skating.-【Size Guide】 Please read the size chart before purchasing. Our ski sock size covers several stages, ideal for 3-13 years old boys/girls/toddlers/youth. XS for ages 3-5, S for ages 6-9, and M for ages 10-13.-【Anti-slip Design】: Soft stretchy cuff prevent socks from slipping. The stretchy design at the arch and ankle helps the socks fit perfectly, allowing the child to move freely with heavy ski boots. Padded toes and heels help you prevent tearing and provide more warmth.-【Perfect Gift Choice】 Our ski sock is a perfect gift choice for your kids. Let our socks give he/her more warmth & comfy in this winter. Winter is coming! Are you ready to get happy wintertime with your kids?