New in package MULTI-FUNCTIONAL:This all-in-1 Hydration Pack is Value-added, fashionable, lightweight and multifunctional. Alternative uses for Hikers, Bikers, climbers, Runners, Hunters, Travelers, Outdoor Enthusiasts,Gym,Etc.Lightweight With Multi Large Storage Meet your different need. DURABLE&BREATHABILITY:Made of High quality Fabric material, the insulated hydration compartment fits up to 3L bladders and keeps liquids cool for up to 4 hours. The interlayer is designed to fix the bladder solidly so that it won't bounce during movement. LIGHTWEIGHT & COMFORTABLE:Heavy-duty construction with 900D oxford cloth and PVC lining, resistant to tears and abrasion. Weights only 22 ounces, it adds no heavy burden to your travel load. Adjustable shoulder, chest and waist straps ensure a stable and suitable carry. The ventilated mesh padding on the back area will keep your back always stay cool, dry and comfortable. NON-TOXIC & BPA FREE 3L WATER BLADDER(New Version):Comes with a taste free odorless water bladder to keep you hydrated throughout your adventure. The large opening (Diameter: 3.7 inches) makes it easy to refill, clean and dry. The quick-release tube with auto-shutoff valve, soft silicone mouthpiece and insulated neoprene tube cover ensures more easy control of the water flow and provides a leak-proof and enjoyable drinking experience. MOLLE SYSTERM& FEATURING MULTI POCKETS:1 Main Pocket for Max 3L Bladder and 2 Front Packets for phone, wallet, keys, towel, small tools. Both top and bottom pockets has Integrated.1 Backside 17" storage.Tactical MOLLE System for various Molle-compatible pouches and accessories.