Includes 2 body bottle III water bottles; Comfort Cinch has been upgraded with High Molecular Weight Polyethelyne cord for extra strength and air mesh panel to prevent chaffing; Zippered water resistant phone pocket at front chest; Shape has been upgraded to wrap completely around the body for a more secure vest-like fit; Comes with 4 hooks and bugee loops to attach trekking poles; Large rear compartment to accommodate up to a 2L reservoir; Front buckle sternum straps with T-hook adjustments; Back pockets are placed so that all pockets are accessable while wearing the vest; Silicone elasatic loops at back provide additional trekking pole or gear storage; Water resistant but fully breathable back panel for maximum ventilation