UltraFlask™ Speed 600 ML Soft Flask

The UltraFlask Speed 600 ml holds more so you can go run the distance. Its soft material shrinks as you drink to minimize water movement.
Go big. The largest of our ultra-light series, the UltraFlask Speed 600 ml holds more so you can go the distance. Its soft material allows it to fit snugly in most vest pockets and it shrinks as you drink to minimize water movement. Topped with our newest SpeedFill™ cap feature that makes aid station refills a breeze. 
Replacing your bite valve from time to time helps maintain your hydration system. HydraPak's Bite Valve Sheaths provide a soft bite and are made of durable silicone. Perfect for chewers or to keep in your emergency gear kit with your bandaids and duct tape. Fits and replaces all HydraPak bite valves on our Reservoirs, SoftFlasks, and UltraFlasks.  *Please note - Blaster Sheaths DO NOT fit on the new Comet Bite valves and are not compatible with any of the new 2023 reservoirs. Please purchase Comet Bite Valve Sheaths HERE.
When it comes to hydrating equipment, heavy duty use needs heavy duty cleaning. Bottle Bright tablets are readily biodegradable, safe & environmentally friendly, made to keep all your containers clean and operating at optimum performance. Contains 12 tablets. Use one tablet per liter of water. 

Go big. The largest of our ultra-light series, the UltraFlask Speed 600 ml holds more so you can go the distance. Its soft material allows it to fit

UltraFlask™ Speed 600ml , 2-Pack

Hydrapak SkyFlask™ IT 500ml – Axis Boutique

Buy the Hydrapak ULTRAFLASK SPEED 600ml Water Bottle online or shop all Accessories from .

Hydrapak ULTRAFLASK SPEED 600ml Water Bottle - Accessories

Whether it's trails, rivers or slopes, nutrition is just a bite away. The collapsible, lightweight SoftFlask 250 is easy to fill and even easier to consume with our patented soft silicone bite valve. It can be integrated into a variety of packs, vests, belts, even PFDs. And since it holds 8.5 fl oz of your favorite nutrition concoction, you can go the distance without running out.

Hydrapak SoftFlask, 150 ml / Malibu Blue

Hydrapak Ultraflask Speed Flask

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. Ultra light weight, ultra useful.

Hydrapak Ultraflask Speed 500 ml Malibu Blue

Raidlight EazyFlask 600ml Softflask, flexible bottle, trail running – RaidLight

HydraPak UltraFlask Speed 500ml 2-Pack (500 ml/17 oz), Malibu Blue & Bite Valve Replacement Sheath - for Hydration Reservoir Soft Flask - 2 Pack, Clear (A181) : Everything Else

Ultraspire introduces yet another milestone in hydration history! the ultraflask 550 hybrid bottle has all the benefits of a softflask but with the conveniences of a hard bottle. The bottle is designed to sit as close to the body as possible to minimize movement when full. the soft-body shape helps with rapid access comfort and squeeze. the large cap opening easily fits ice cubes and is covered by a high flow push/pull valve. Made in the usa.

Ultraspire Ultraflask 550

RUN｜HydraPak SkyFlask™ IT Speed 300 ML 運動跑步保溫軟水樽