Assembled used high frequency welding, the Guy Cotten Chinook Pullover is manufactured with medium duty Glentex fabric coated with PVC. The high frequency welding process yields a product that is not only light weight, but also 100% waterproof. This extremely comfortable pullover is very durable and can be used for even the toughest working conditions. The neoprene cuffs will keep your sleeves and arms dry when working or playing outdoors in bad weather conditions, while the 1/4 zip makes this pullover very easy to slip on and off.