This listing includes one (1) soft flask.
- Includes 1 Soft Flask - This listing is for one (1) Orange Mud UltraFlask 500ml (17oz), not a set or pair.
- Orange Mud UltraFlask Fits Your Vest - Made for Orange Mud vests and packs, and fits the front pockets of most running vests, including Salomon.
UltraFlask 500ml: Flexible, No-Slosh Hydration
The UltraFlask 500ml soft flask is your perfect hydration companion, designed for seamless integration with Orange Mud packs. Its body-conforming, super-soft material fits Orange Mud vest pockets and most running-vest front pockets, providing on-the-fly access with simple twist of the locking lid.
Dynamic Performance, Easy Hydration
This flask shrinks as you drink, actively reducing water sloshing for a quiet, stable carry. Fill it easily with ice cubes thanks to the wide 42mm sport cap.
Built Tough for Any Adventure
Durable and resilient, the UltraFlask can be frozen or filled with warm water (up to 140°F / 60°C). Made from 0.25mm TPU, HDPE, it's 100% BPA/PVC-free and comes with a No-Leak™ Guarantee.
Capacity: 500 ml / 17 oz | Weight: 1.4 oz. Your go-to for light, versatile, and secure hydration.
Features
- BODY CONFORMING SOFT FLASK - Soft flask, super soft material conforms to any pocket
- ANTI-SLOSH - Shrinks as you drink, reducing water sloshing
- LEAKPROOF DESIGN - Lock or unlock to allow or stop flow of fluid by moving the sliding tab under the bite valve.
- FULL SIZE ICE CUBE FRIENDLY - 42 mm sport cap with silicone bite-valve
- Can be frozen or filled with warm water (max temp 140°F / 60°C)
- Durable, built for a lifetime of tough use, No-Leak™ Guarantee
Specifications
- CAPACITY: 500 ml / 17 oz
- WEIGHT: 1.4 oz (40 g)
- DIMENSIONS: 7.3 x 2.6 (18.54cm x 6.6cm)
- MATERIAL: 0.25 mm TPU, HDPE, 100% BPA and PVC Free
Care Instructions
- Rinse before use. Dishwasher safe (top rack recommended).
- Note that the bite valve is in place by a press fit plug on the bottom of the cap. If you want to take it apart to clean, just pull the bite valve firmly off the cap, being careful not to lose the plug.
Frequently Asked Questions
How many flasks come with this listing?
One. This listing is for one (1) Orange Mud UltraFlask 500 ml / 17 oz soft flask with locking bite valve, not a set or pair.
What makes the Orange Mud 500ml Soft Flask different from regular water bottles?
The soft flask is body-conforming and shrinks as you drink, reducing sloshing. It fits any pocket and works seamlessly with Orange Mud packs for hands-free hydration.
Is the flask leakproof?
Yes! The locking bite valve allows you to lock or unlock the flow, and the flask comes with a No-Leak™ Guarantee for worry-free use.
Can I use the flask with hot or cold liquids?
Absolutely. The flask can hold warm liquids up to 140°F (60°C) and can also be frozen, making it versatile for any adventure.
How do I clean the flask?
Rinse before use or place on the top rack of your dishwasher. The bite valve can be removed for deeper cleaning; just pull it firmly off the cap without losing the plug.
Is this flask suitable for running and outdoor sports?
Yes! Lightweight at just 1.4 oz, compact, and designed to minimize bounce, it’s ideal for trail running, ultrarunning, marathons, cycling, and more.