Eco Cordura is made using recycled pre- and post-consumer materials Weatherproof exterior and waterproof 70D TPU liner resist moisture Aircraft-grade 6061 aluminum tri-glide buckle adjusts strap quickly OrthoLite® foam strap pad provides lasting comfort and support Switchable shoulder strap lets you choose right- or left-handed carry Dual-side vertical-zip front pocket offers fast access to essentials (S, M, L) Spacious interior with extra organization and dual water bottle pockets