The zipper running through the back panel of this Atrack pack allows both security and ease of use: it opens the pack from top to bottom for easy packing and unpacking, while keeping that zipper tucked against your back. This CR model is a simplified version, with a lightweight waist strap and simple inner compression straps instead of external ones. - Waterproof: fully waterproof material and waterproof TiZip zipper - IP67 protection: dustproof, can withstand a 30 minute submersion in 1 meter deep water - Main material: PS33, a durable polyurethane coated nylon fabric, PVC-free, FOA-free, BPA-free - Adjustable back panel length - Hip strap - Two mesh pockets on the outside - Front panel with latch points for extra gear - Four zippered pockets inside - Waterproof port for hydration hose (waterproof before, during and after use of hose) - Max. payload: 10 kg - Made in Germany - 5 year guarantee against defects in materials and manufacture