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.
Hydrate Without Hesitation.
The Orange Mud UltraFlask 500 ml / 17 oz is built for trail runners, ultra endurance athletes, and anyone who demands reliable hydration on every mile. A body-conforming soft flask that shrinks as you drink and fits Orange Mud vest and belt pockets.
Why Athletes Choose the UltraFlask 500ml:
- No-Slosh Design — Collapses as you drink to reduce sloshing and maintain stability in motion. No distracting noise, no shifting weight.
- Bite Valve — 42mm sport cap with silicone bite valve. One-hand access on the go.
- 100% BPA & PVC Free — Constructed from 0.25mm TPU and HDPE. Safe for you, safe for the environment, built to perform.
- Dishwasher Safe — Toss it in after every run. No brushes, no fuss. Clean gear ready for your next effort.
- Freeze or Fill Hot — Rated from freezing to 140°F / 60°C. Fill with ice for hot races or freeze overnight for slow-melt hydration on long efforts.
- Ultra-Light at 1.4 oz — 500 ml / 17 oz capacity weighing just 40g. Carry more water, feel less pack.
- DIMENSIONS: 12.5" x 2.6", includes length of straw.
Ideal for running, trail, ultra endurance, hiking, and triathlon.
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, not a set or pair.
What makes the UltraFlask different from a regular water bottle?
The UltraFlask is a soft, flexible flask that shrinks as you drink, reducing water sloshing for a stable, quiet carry.
Will the UltraFlask fit my vest?
It is made for Orange Mud vests and packs, and fits the front pockets of most running vests, including Salomon.
How do I clean and care for the UltraFlask?
Rinse before use. It is dishwasher safe (top rack recommended).
Can I freeze it or fill it with warm liquids?
Yes. It can be frozen or filled with liquids up to 140°F (60°C). It is made from 0.25 mm TPU and HDPE, 100% BPA and PVC free.
How much does it hold and weigh?
It holds 500 ml / 17 oz and weighs 1.4 oz (40 g).