Hydro PackBPA-free bladder with an easy clean, big bore topMagnetic bite valve holderThermal lined bladder compartment helps keep fluids coolSternum strap and buckle keep gear securePack harness is angled away from the underarms giving total freedom of movementHarness made with air mesh for ventilationReverse face YKK® water-resistant zip on frontMicro fleece lined glasses/media pocketTHOR reflective logo1200D Ballistic polyester/600D reversed faced poly shellFeatures an external zippered pocket.