Brand new with tags still on, 2 liter hydration pack perfect for hiking, camping, running, biking, etc. Very lightweight. Smoke free, pet friendly home. Features & details Lightweight and Compact: Weights only 0.8lb (0.36kg), Rockrain hydration pack is lightweight and can hold a few small items as well such as a snack or two, Kleenex, wipes, and keys, in addition to the 2 liters of water to keep you hydrated. It’s perfect if you outdoors for several hours. Durable and Adjustable: Made of high-quality anti-tear nylon materials, it is durable and tough. The adjustable shoulder, chest and waist straps can be modified to fit your torso, which can be used as women, men and kids. It's bounce free while jogging, cycling, hiking or other activities. Insulated Layer: With an insulation layer made of aluminum foil that keeps your liquids cool for up to 4-6 hours, that you can enjoy the cool water at any time. This backpack is perfect for short trips, running, cycling, hiking, skiing, camping, biking, hunting and other outdoor activities. 2L Water Bladder Included: Comes with a BPA-Free 2L water bladder, 100% odorless which can let you drink more secure. The bladder has an auto-lock quick-connect design. Even if the tube is pulled out, the water will not outflow. A 3.4in (8.6cm) Opening is easy to add ice and cleaning.