STX 100% Nylon ™ WP 20,000 / 20,000 M.V.POur best lightweight shell jacket with high breathability that combines extreme functionality with perfect comfort. The garments are windproof and waterproof with taped seams. The jacket is equipped with ventilation solution under the sleeves in the form of rubberized zippers. All zippers are YKK and the fixed hood is triply adjustable. The jacket is equipped with two external and an inner zippered pocket and output to the headphone. The jacket is an excellent expedition jacket and has been tested on Mount Everest 8848 m above sea level The jacket has evolved over five seasons Saran Subba, one of Nepal's most experienced mountain guides.