3804 Darn Tough Vermont Kids' Pow Cow OTC Midweight Conditions always call for a good toasty pair of winter socks. Darn Tough's midweight with cushion is a safe bet for sliding into anything from a rental boot to whatever they're slogging to the car in. Merino Wool is softer than you might think and it's a good choice if you're going to play in the winter weather.