3040 Darn Tough Vermont Kids' Magic Mountain OTC Midweight The idea of the perfect kids' winter sock might seem like a unicorn, but it's not. It's right here, made with warm, not itchy, Merino Wool. These will keep their toes warm and can be worn again, and again, and again. There's even a little added cushion in the shin for help in ski and snowboard boots. We have kids too - Vermont made, Vermont tested.