The UltraFlask™ 500 soft flask is an ideal compliment to the Endurance Pack, HydraQuiver Vest Packs, Gear Vest, Adventure Pack and PFV series of Orange Mud products. You can quickly stash the flask in your front chest pocket for access on the fly plus it comes with an optional use 4" hose. Quickly take it off if you just want the bite valve, or if you want the hose leave it as is! 

Features

  • BODY CONFORMING SOFT FLASK - Soft flask, super soft material conforms to any pocket
  • ANTI-SLOSH - Shrinks as you drink, reducing water sloshing
  • VERSATILE DESIGN - Use with or without tube, option to mount bite valve directly to cap
  • 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: 500ml / 17oz
  • WEIGHT: 1.4 oz (40 g)
  • DIMENSIONS:  7.25 x 2.6 (20.96cm 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 hose is held 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 hose firmly off the cap, being careful not to lose the plug. 
average rating 5.0 out of 5
Based on 22 reviews
  • 5 Stars
    21 Reviews
  • 4 Stars
    1 Review
  • 3 Stars
    0 Reviews
  • 2 Stars
    0 Reviews
  • 1 Star
    0 Reviews
100% of reviewers would recommend this product to a friend
Times Used
Rated 3 out of 5
Quality
Rated 4 out of 5
Function
Rated 4 out of 5
Customer photos and videos
22 Reviews
Reviewed by Jayne S., from United States
Verified Buyer
I recommend this product
Product Standouts
  • Easy to Wash
  • No Bounce
  • Easy Access
  • No Chaffing
  • Very Comfortable
I use it for
  • Marathon
  • Road Running
  • Trail Running
Rated 5 out of 5
Review posted

Flask

I love the bite valve flasks. Perfect for all my running miles. Love your products!

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Rated 5 out of 5
Quality
Rated 4 out of 5
Function
Rated 4 out of 5
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Reviewed by Gretchen E., from United States
Verified Buyer
I recommend this product
Product Standouts
  • Easy to Wash
  • High Quality
  • Very Comfortable
  • No Bounce
  • No Chaffing
I use it for
  • Trail Running
  • Ultrarunning
  • Marathon
  • Mountain Biking
  • Road Running
Rated 5 out of 5
Review posted

Excellent flasks

I love my flasks. They are easy to drink from, sit securely in the best, no sloshing around.

I highly recommend these soft flask.

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Times Used
Rated 5 out of 5
Quality
Rated 5 out of 5
Function
Rated 5 out of 5
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Reviewed by john s., from United States
Verified Buyer
I recommend this product
Product Standouts
  • High Quality
  • Easy to Wash
  • Very Comfortable
  • No Chaffing
  • Easy Access
I use it for
  • Trail Running
  • Ultrarunning
  • Triathlon
  • Road Running
  • Mountain Biking
Rated 5 out of 5
Review posted

Another quality product

Great quality, small, compact and fit my vest perfectly. Great for so many uses...running, hiking, biking, etc. Highly recommend

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Times Used
Rated 5 out of 5
Quality
Rated 5 out of 5
Function
Rated 5 out of 5
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Reviewed by Jana Upton C., from United States
Verified Buyer
I recommend this product
Product Standouts
  • Easy to Wash
  • Easy Access
  • Compact
  • High Quality
  • No Bounce
I use it for
  • Trail Running
  • Ultrarunning
  • Road Running
  • Marathon
Rated 5 out of 5
Review posted

Ultra Flask

Great product-easy to use, especially at the point of racing where your extremities no longer function properly. 😂

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Times Used
Rated 5 out of 5
Quality
Rated 5 out of 5
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Rated 5 out of 5
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Reviewed by Emily T., from United States
Verified Buyer
I recommend this product
Product Standouts
  • Easy to Wash
  • High Quality
  • Very Comfortable
  • Easy Access
I use it for
  • Marathon
  • Road Running
Rated 5 out of 5
Review posted

Shrinks as you drink!

I got these flasks for the front of my orange mud hydration backpack. Sometimes the bladder is just too much water. But I need more than I can have an a handheld water bottle.

Today I ran 12 miles in hot and humid conditions and it worked great! I felt like the straws were in my peripheral vision a bit until I drank them down. I liked that as I drank, the flasks collapsed.

I know it’s weird, but I kind of hate dealing with the bladder. I like to get everything ready for my run the night before and the bladder flops around. These little guys don’t leak or flop and see much more manageable.👍🏻👍🏻👍🏻

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Times Used
Rated 3 out of 5
Quality
Rated 5 out of 5
Function
Rated 5 out of 5
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