HydraPak® IsoBound™ 2 L Insulated ReservoirnHigh-flow HydraPak® Blaster Bite Valve self-seals after each sipnHydraPak® Plug-N-Play™ connect system lets you easily disconnect the hose and remove the reservoir from your pack for convenient refillingnPadded back panel for added comfortnFully adjustable shoulder, sternum and hip strapsnSoft pocket for sunglasses or a phonenHelmet attachment loopsnChest strap with integrated whistlenWebbing for a bike light attachmentnKey clip