FREE shipping on all orders $74.95 and over.

Enable Accessibility

Search suggestions:

Search Best Sellers

  • Obsidian Black (001) Obsidian Black (001) Obsidian Black (001) Obsidian Black (001) Obsidian Black (001) Obsidian Black (001) Obsidian Black (001) Obsidian Black (001) Obsidian Black (001)
    Polar Trex™ Winter Dog Boots colors

    Polar Trex™ Winter Dog Boots

    winter traction & insulation

    4.3
    Rated 4.3 out of 5 stars
    332 Reviews
    Original price $54.95 USD
  • Blaze Orange (850) Front Range Harness in Basalt Gray (042) Front Range Harness in River Rock Green (355) Blue Pool (410) Red Canyon (625) Moonlight Mountains (964) Spring Mountains (968) Coastal Mountains (973) Blaze Orange (850) Front Range Harness in Basalt Gray (042) Front Range Harness in River Rock Green (355) Blue Pool (410) Red Canyon (625) Moonlight Mountains (964) Spring Mountains (968) Coastal Mountains (973) Blaze Orange (850) Front Range Harness in Basalt Gray (042) Front Range Harness in River Rock Green (355) Blue Pool (410) Red Canyon (625) Moonlight Mountains (964) Spring Mountains (968) Coastal Mountains (973) Blaze Orange (850) Front Range Harness in Basalt Gray (042) Front Range Harness in River Rock Green (355) Blue Pool (410) Red Canyon (625) Moonlight Mountains (964) Spring Mountains (968) Coastal Mountains (973) Blaze Orange (850) Front Range Harness in Basalt Gray (042) Front Range Harness in River Rock Green (355) Blue Pool (410) Red Canyon (625) Moonlight Mountains (964) Spring Mountains (968) Coastal Mountains (973) Blaze Orange (850)
    Front Range® Dog Harness colors

    Front Range® Dog Harness

    padded, everyday adventure

    4.7
    Rated 4.7 out of 5 stars
    3,932 Reviews
    Original price $54.95 USD
  • Strata (962) Blue Jay (437) Galaxy (954) Strata (962) Blue Jay (437) Galaxy (954) Strata (962) Blue Jay (437) Galaxy (954) Strata (962) Blue Jay (437) Galaxy (954) Strata (962) Blue Jay (437) Galaxy (954) Strata (962) Blue Jay (437) Galaxy (954) Strata (962)
    Climate Changer™ Dog Fleece colors

    Climate Changer™ Dog Fleece

    technical, breathable fleece

    4.7
    Rated 4.7 out of 5 stars
    441 Reviews
    Original price $59.95 USD
  • Fireweed Pink (627) Blue Moon (460) Fired Brick (611) Campfire Orange (815) Blue Moon (460) Fired Brick (611) Campfire Orange (815) Blue Moon (460) Fired Brick (611) Campfire Orange (815) Blue Moon (460) Fired Brick (611) Campfire Orange (815) Blue Moon (460) Fired Brick (611) Campfire Orange (815) Blue Moon (460) Fired Brick (611) Campfire Orange (815) Obsidian Black (001) River Rock Green (355) Fireweed Pink (627) Obsidian Black (001) River Rock Green (355) Fireweed Pink (627) Obsidian Black (001) River Rock Green (355) Fireweed Pink (627) Obsidian Black (001) River Rock Green (355) Fireweed Pink (627) Obsidian Black (001) River Rock Green (355) Fireweed Pink (627) Obsidian Black (001) River Rock Green (355) Fireweed Pink (627)
    Quinzee™ Dog Puffer Jacket colors

    Quinzee™ Dog Puffer Jacket

    packable & insulated

    4.8
    Rated 4.8 out of 5 stars
    342 Reviews
    From $74.95 USD - $89.95 USD $74.95 USD - $89.95 USD
Clear Lake
4.5
Rated 4.5 out of 5 stars
31 Reviews

Trail Runner™ Soft Flask

Water & Hydration

Color

Selected: Clear Lake

Choose size
Shipping box icon.

Free Returns

 Leaf icon.

Better With Each Design

 Trail Tested Promise icon

Trail Tested Promise
Right Arrow

We teamed up with Hydrapak® to bring the performance of their iconic soft hydration flasks to you and your dog’s next adventure. They’re made of a pliable, lightweight material for a hydration solution that’s easy carrying - whether that’s in your running belt or your running vest (or your dog’s). Just twist the valve and squeeze the bottle to dispense water for a trailside straight-from-the-spout-sip or a dog bowl refill.

Compatibility: Trail Runner™ Belt (360 ml); Trail Runner™ Running Vest (360 ml for size XS; 500 ml for size S - L/XL)

Final sale. Not available for return.

COMFORTABLE WATER CARRY

Iconic Hydrapak® design with soft material that conforms to most hydration vests, belts, and pockets.

SHRINKS AS YOU DRINK

Flexible design shrinks as you drink for less sloshing and more space savings.

EASY TO USE

Twist valve and squeeze to dispense water.

  • Materials

    • TPU, PP/POM, Silicone
    • Made in China

  • Care

    • Hand wash
    • Mild detergent
    • Air dry

Select Size

Find the right size for you. If using with the Trail Runner™ Belt, we recommend the 360 ml. For replacing flasks for the Trail Runner™ Running Vest, we recommend 360 ml for size XS and 500 ml for size S - L/XL.
Select Size chart
Select Size

Ratings & Reviews

4.5
Rated 4.5 out of 5 stars
Based on 31 reviews
Total 5 star reviews: 24 Total 4 star reviews: 3 Total 3 star reviews: 1 Total 2 star reviews: 1 Total 1 star reviews: 2
Write a Review (Opens in a new window)
31 reviews
  • Tina O.
    Verified Buyer
    Reviewing
    Trail Runner™ Soft Flask 360ML / Clear Lake (102)
    I recommend this product
    Rated 5 out of 5 stars
    13 seconds ago
    Great little bottle

    Small enough to not be cumbersome in my pack. And it doesn’t leak! Amazing, since there’s a bunch of other stuff bombarding it in there. And no crunching plastic sound like many collapsible bottles. It doesn’t hold enough for a long journey of course, but certainly enough for a tide over. Would recommend.

    Was this helpful?
  • Catherine C.
    Verified Buyer
    Reviewing
    Trail Runner™ Soft Flask 360ML / Clear Lake (102)
    I recommend this product
    Rated 5 out of 5 stars
    4 days ago
    Fits inside the belt perfectly

    I bought this only because it fits inside the bag and I don't want to carry one separately.

    Was this helpful?
  • Kalok W.
    Verified Buyer
    Reviewing
    Trail Runner™ Soft Flask 360ML / Clear Lake (102)
    I recommend this product
    Rated 5 out of 5 stars
    3 weeks ago
    Trail Runner Soft Flask

    Nice soft flask

    Was this helpful?
  • Pearl J.
    Verified Buyer
    Reviewing
    Trail Runner™ Soft Flask 360ML / Clear Lake (102)
    I recommend this product
    Rated 5 out of 5 stars
    2 months ago
    Great product

    Love this collapsible and flat water bottle with no harsh chemicals and super easy to clean

    Was this helpful?
  • Jasmine M.
    Verified Buyer
    Reviewing
    Trail Runner™ Soft Flask 360ML / Clear Lake (102)
    I recommend this product
    Rated 5 out of 5 stars
    4 months ago
    Trail Runner Soft Flash

    The nozzle is easy for me to use and my dog can drink from it easily. Fits perfectly on the trail runner waist pack. It’s super lightweight for my trail run which is essential.

    Was this helpful?
Show More