The men's On Sweat Pants are designed for supreme comfort. On cut the Sweat Pants from a soft performance blend of polyester, lyocell and elastane, which keeps you warm while remaining light and breathable. Designers then tailored the pants for a comfortable and relaxed fit to make kicking back even easier. A polyester-and-wool blend knee panel helps keep your joints warm, and an antibacterial treatment fights stink so you can wash them less. When you want to relax as hard as you train, slip into the men's On Sweat Pants.