Part of our ultra-light series, the 500 ml is so light, you might forget you brought it. Weighing in at just over an ounce, it’s optimal hydration, no matter what kind of runner you are. Its pliable material conforms to most pockets, it shrinks as you drink to minimize water movement and it can be used with or without the tube. Topped with a new feature, the SpeedFill™ cap, makes aid station refills a breeze. Ultra light weight, ultra useful. BPA Free, BPA & PVC free, Leakproof, Freezeable.

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™ connect system lets you easily disconnect the drink tube (an auto shutoff valve prevents leaking) and remove the reservoir from your pack for convenient refilling

External capacity gauge allows you to track your hydration intake or measure out the contents

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)

Capacity: 500mL
Dimensions: 12.3" x 5.9"
Weight: 4.4 oz.
Materials: TPU, PP/POM, ABS, Silicone