The pants are equipped with a stretch panel in the center of the back for unrestricted mobility and preventing snow from creeping in. A chest pocket keeps everything in place, while fleece-lined handwarmer pockets hold keys, phone or cards. Thigh vents allow for sufficient ventilation to prevent overheating. The slim fit is close to the body and has room to move with you. DRYRIDE double-layer polyester stretch fabric is highly breathable, water-resistant and quick-drying. It offers breathability for moderately demanding activities with moderate sweat wicking for quick-drying comfort. Zippered ventilation holes increase breathability during more intense activity and in warmer conditions.