SHERPA ADVENTURE GEAR Men's Dorje Pant, Black, Small Polartec Power Stretch: 84% Polyester, 16% Spandex Imported Soft, elastic waistband is snug yet comfortable Polartec Power Stretch provides 4-way stretch mobility, is exceptionally breathable, resists abrasion, and has great moisture-wicking performance Midweight material has a smooth outer surface which slides easily against other layers, while the interior fleece side feels warm and comfortable Flat-locked seams are placed away from the zones where pack straps or harness could chafe