Elite Bladder Caps & Beanies High performance battery: high performance High performance battery: high performance maintenance free and exceptional resistance to vibration Full length handle facilitates filling top shelf dishwasher safe Made of ultra durable Slide Seal top opens wide for easy filling and closes tight for a leakproof seal High flow Blaster 45 degree 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 shutoff valve prevents leaking) and remove the bladder from your pack for convenient refilling Fully reversible for easy cleaning and drying