Description of The North Face Impulse Pants Stay comfortable on and off the trail. Features: Shell a: 240 g/m² 90% polyester, 10% elastane - wicking Shell b: 150 g/m² 76% micropolyester, 23% biconstituent fiber (98% polyester, 2% carbon from bamboo), novelyt circular knit piquè - wicking, UPF Carbon from bamboo technology Flat-locked seams Drawstring elastic waist Two hand pockets Stash pocket in waistband Reflective silver stripe next to calf zipper Wicking Ultraviolet Protection Factor (UPF) 30