Design & Details: Main compartment is accessible through a top zipper Constructed from lightweight ripstop fabric Insulated reservoir pocket comes with a 2L wide slide reservoir BPA-free reservoir features a bite valve with an on/off switch 360deg reflectivity for high visibility Full-length main compartment Front accessory pocket with organizer Quick-stash gusseted pocket with compression straps that unbuckle to attach gear Adjustable waist belt with pockets allows you to create a customized fit Dual water bottle pockets Exterior daisy chain for attaching gear