These are popular Montbell merino wool tube socks. They fit approximately 11-16cm and are durable due to their high quality. I received these as a hand-me-down and wore them once with snow boots, but they've been stored away since. Warm yellow baby socks with non-slip grips for safety. - Color: Yellow - Design: Non-slip - Material: Wool (warm material) - Size: Baby Thank you for looking.