Enjoy on-the-go hydration with the Erzberg 1L Hydration Pack by Ogio. The low profile design fits under – or – over – your roost deflector and jersey. The padded, air mesh back panel wicks moisture away from the body and allows for air flow. Mesh shoulder straps feature a tube routing system for easy and secure access, and an adjustable sternum strap customizes the fit to every rider. The zippered pocket on the front is great for stashing essentials or small gear. The Erzberg 1L Hydration Pack is an essential addition to any ride.Dedicated Anti-Sloshing hydration bladder compartment with hook & loop secure strap for holding bladder in place and tube channel port.Insulated Cooler Fabric lining that keeps liquid cold for 30% longer.Breathable front compartment for storing extra gear and accessories.Quick cooling air mesh back panel.Multi-Adjust harness system designed for easy maneuverability.Built for precision fit of all body types. Stays secure to the body.Dual Triangulated E-band waist strap for a comfortable fit.35oz. / 1L bladder – custom mPE/EVA film, naturally anti-microbial, BPA free, zero taste, and odor-free. Features a top fill closure and anti-slosh stabilizing handle for easy fill and cleaning.Dimensions: 11" H x 9.5" W x 1" D Capacity: 185 cu.in./1 L (includes bladder) Weight: 0.9 LB/408g. (excludes bladder).Fabric: 150D Mini honeycomb rip stop with TPE backing & 420 HD Oxford nylon with PU backing.