A base layer pant made with midweight, single sided, 4 way stretch Polartec(r) Power Stretch(r) Power Dry(r). A polyester/nylon/spandex blend provides warmth and keeps you feeling dry. Flat seam construction to prevent chaffing, gusseted crotch, and low profile boxer style waistband. Antimicrobial finish. UPF rating 40+ (blocks 97% of UV).