Part of the Oxford Products Atlas range, the Atlas B-10 Advanced Backpack has a manufacturer's lifetime guarantee (against faulty materials or manufacture. Excludes reasonable wear & tear) and is made from ultra-durable 1000D PU backed PET main body with 420D Ripstop PET roll top opening and heavy0duty 1mm Hypalon base with 0.6mm Hypalon top panel. It comes with a 20,000mm waterproof-rated main compartment with adjustable, 2-point fastening, roll top dry main compartment made from UV-resistant materials and components Level 5 IP-rated water-resistant outer-shell materials. The Fidlock V-Buckle has a magnetic, single-handed, quick-release sternum strap fastening with a 4-point adjustment on the sternum strap (compatible with winter/summer apparel) and a water bladder pocket with tube routing. Air channelling gives superior airflow with padded 3D mesh and direct vents for superior comfort and ergonomically shaped shoulder straps for outstanding freedom of movement. It also has an Atlas Strap Pack connection using simple, secure Molle loops. Inside is a 10-litre main compartment with an easy-access phone/wallet compartment and an external adjustable Hypalon stash, and the dimensions of the B-10 back are: W: 20cm H: 45cm x D: 10cm.