Replacement 2-liter bladder for horizontal hydration packs. It's durable for hard riding and fully reversible for easy cleaning. A quick-connect coupler makes it easy to use. Slide-Seal™ top opens wide for easy filling and closes tight for a leakproof seal. High-flow Blaster™ bite valve self seals after each sip and features a twist on/off bar to prevent leaks when not in use. Plug-n-Play™ connect system lets you easily disconnect the drink tube (an auto shut-off valve prevents leaking) and remove the reservoir from your pack for convenient refilling. Fully reversible for easy cleaning and drying, top-shelf dishwasher safe. Made of ultra-durable, abrasion-resistant TPU and RF welded seams for superior durability and elasticity. Can be frozen or filled with hot water (maximum temp 60°C / 140°F). Safe and reliable, 100% BPA and PVC free.