Loading... Please wait...The best long underwear we have ever sold! The Minus 33 midweight long underwear is made from 100% Merino Wool put through a special process to create a garmet that is washable, dryable and so soft and supple it's unbelievable. In addititon, the Minus 33 long underwear wicks moisture away from the skin 30% faster than any synthetic fabric. While at work, hunting, fishing, exercising, skiing, snowboarding, snowmobiling, or just relaxing, Minus 33 Merino Wool base layer long underwear will be the most comfortable fabric you have ever worn.