100% cotton, zipper closure, machine wash, comfortable and flexible after washing the fuselage and hood are made of diamond quilted comfortable brushed lining, with nylon lined sleeves and polyethylene filled insulation, flat rib knit cuffs and waist with spandex for superior elasticity and resilience articulated elbows for a comfortable fit, heavy duty metal zipper with easy grip. we spend countless hours perfecting the science of work wear and something great has happened along the way. we have discovered that our clothing is not only durable and suitable for the worker, but outdoor enthusiasts and adventure seekers alike are drawn to our products..syi