Made of sturdy and durable polyster which is tear-resistant, sturdy and adjustable straps, smooth zippers. Plus it also comes with an extra shoulder strap. Double Zippers With smooth Reliable zippers, no need to worry any ripping or break during trips. Reinforced Strap Solid straps bear the weight more than 30 Pounds. Water-resistent Made of water-resistent and thick fabric to protect your gears well from rain or wet.