High Sierra Switchback Waistpack Lightweight top-load lumbar pack comes with a removable water bottle holder and also includes a 500ml GE Lexan shatter-resistant polycarbonate bottle. Low-profile main compartment has a key fob and CD/MP3 pocket with headphone access grommet. Removable bottle holder can be moved to the right or left side of the pack or add a second LXB500 bottle holder (purchased separately). Bottle holder has waist belt flap with hook/loop closure for hands-free transport and pull tab for easy bottle removal. Toughstuff-PVC loop to attach a carabiner or other gear.