The Mens Smartwool Lightweight Bottoms are lightweight and comfortable. Made with 100% SmartWool jersey knit, the Lightweight Bottoms manage moisture and temperature, offer itch-free comfort, and are naturally antimicrobial to fend off odor. Comfort is ensured with chafe-free flatlock seam construction, exposed logo elastic waistband, and traditional fly design. The Mens SmartWool Lightweight Bottoms are perfect for layering.