High Sierra Solo Lumbar Pack Low-profile main compartment has a key fob and CD/MP3 player pocket with PVC headphone grommet. Equipped with one 500ml GE Lexan&reg shatter-resistant bottle. Adjustable side compression straps secure contents of pack. Vapel mesh Airflow padded back panel wicks body moisture and provides superior comfort. Contoured webbing daisy chain to attach a carabiner or other gear.