The Burton men's Midweight Base Layer Pants are made with the cotton-like comfort of DRYRIDE Ultrawick midweight fabric that's scientifically engineered to pull heat-robbing sweat away from your skin and propel it through your outer layers. You stay dry, warm, and stoked all day, and you get versatile warmth that works all season. They come stocked with added features including four-way stretch for mobility, sustainable odor control, the friction-free comfort of chafe-free seams, and a plush waistband.