Embrava Hydration Bladder Bag by 2 Liter - Backpack Water Storage Replacement - Insulated Tube, &frac14; Turn Big Bite Valve - BPA Free & Nontoxic TPU - Leak Proof Water Reservoir CRISPER, FRESHER WATER  Embrava water bladders offer a thicker, premium-grade TPU and insulated drinking tube that together help water stay colder and taste better, no matter how hot you might be under the summer sun. And with a soft bite valve that makes drinking easier and more comfortable, hydration is more efficient. MAXIMUM CAPACITY  An average-sized adult requires two liters of water each day to stay properly hydrated. The Embrava is designed to hold exactly 2 liters of water not only because thats how much you should intake every day, but also because it makes easier to carry without adding unnecessary strain to your back or legs. COMPATIBLE DESIGN  You can use the sleek, black Embrava Hydration Bladder with our own Embrava Hydration Pack for added stability and water insulation. Combine them together and youll go further than ever before while hiking, cycling, running, jogging or climbing that new mountain range. ENHANCED FUNCTIONALITY  Each Embrava bladder comes with an attached leak proof cap that allows you to easily fill, empty or clean it with ease, as well as a quick release tube should you need to replace it or the bite valve at any point. Youll also find an auto shutoff valve between the tube and bladder to prevent leaks. RELIABLE GUARANTEE  We care about your choice for products because you have a large selection. Thats why all Embrava products come with a 100% satisfaction guarantee. If for any reason our product doesn't meet your standards, just send back your bladder for a replacement or full refund.