Socks for kids featuring a distinctive check pattern design. - Brand: THE NORTH FACE - Colors: Blue, Gray, Black - Design: Check pattern - Size: Kids' Thank you for looking. The size is around 15 cm. I believe they were worn when my child was around 3-4 years old. They have been worn infrequently, but due to their naturally thick and fluffy material, there is some pilling. The inside is clean. Even when wearing boots on the ski slopes, my child didn't seem to feel cold or have cold feet.