Lightweight, sturdy 2.5-layer jacket constructed from windproof (5,000 g / m - 24h) and water-resistant (5,000mm H20). The ventilation opening at the rear of the back helps to regulate the internal temperature of the body. Details: Microfleece textile collar lining for comfort. Zipper on the front with YKK and wind flap. All zipper tabs have easy-to-use tie-rods The elastic cuffs have velcro wrist closures for a custom fit and keep the sleeve in place. Lower back profile for better lumbar coverage with elastic. Regular cut with preformed sleeves. Storage bag with buckles Velcro closure to wear the jacket under the saddle of the v lo. The hood against the weather offers protection against bad weather and I con u to be worn on a helmet.