Check the listing for details. NWT Hydrapak First Wave 1L Hydration Reservoir with HydraFusion Tube. Color: Gray, Condition: New with tags. Listed at 36.76 USD. Simple to use, the patented slider 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 pouringFlexible 36" HydraFusion™ drink tube insulates in hot weather and offers protection in tough conditions, dirt guard protects silicone bite valve from collecting dirtHigh-flow Blaster™ bite valve self seals after each sip and features a smooth twist on/off bar to prevent leaks when not in usePlug-N-Play™ connect system lets you easily disconnect the drink tube (an auto shutoff valve prevents leaking) and remove the reservoir from your pack for convenient refillingExternal capacity gauge allows you to track your hydration intake or measure out the contentsMade of ultra-durable, abrasion resistant TPU & RF welded seams for superior durability and elasticity100% BPA & PVC free, wide working temperature range (can be frozen - max temp 60° C / 140° F)