New for 2019, engineered with more high performance features and an enhanced design for 20% more flow. Smart design, meet peak performance ‚Äì also known as the Shape-Shift Reservoir. Our time-tested creation for hydration on the go, it can take a serious beating, it fits nicely in most packs and it's fully reversible for easy cleaning. Durable, dependable form and function. Specs Capacity 2 L / 70 fl oz unlocked1.5 L / 50 fl oz locked Dimensions 340 x 165 mm / 13.3 x 6.4 in Weight 141 g / 4.9 oz Material TPU, PP/POM, ABS, Silicone For 3 L / 100 fl oz unlocked Capacity 3 L / 100 fl oz unlocked2.5 L / 84 fl oz locked Dimensions 445 x 165 mm / 17.4 x 6.5 in Weight 154 g / 5.4 oz Material TPU, PP/POM, ABS, Silicone Features Center baffle functions like a ziplock bag, sliding together to lock for a low-profile and 1.5-liters in volume – pull or slide apart to unlock full 2-liters of volume Simple to use, the patented Slide-Seal™ top opens wide for quick filling and closes tight for a leakproof seal, includes tether to prevent miss-placing Dual FlexGrip™ handles make the reservoir convenient to carry and access in your pack, providing a secure grip while filling and pouring Flexible 36" HydraFlex drink tube is non-kinking and provides a steady flow High-flow Blaster™ bite valve self seals after each sip and features a smooth twist on/off bar to prevent leaks when not in use Plug-N-Play™ connector optimized for increased flow and a shrouded auto shutoff valve to prevent accidental activation Made of ultra-durable, abrasion resistant TPU & RF welded seams for superior durability and elasticity 100% BPA & PVC free, wide working temperature range (can be frozen - max temp 60° C / 140° F)