The reservoir is accessed via an asymmetric zip for quick and easy refills the reservoir incorporates 2 chevron welded baffles to help maintain shape when full and limit sloshing from the water we also solved the wandering hose issue by placing a magnet in the pack sternum strap and bite valve this holds everything neatly in place when not needed yet ensuring quick and easy access when it is the ventilated airscape back panel and biostretch harness keep you cool in hot conditions whilst