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This product is no longer available, but don't go just yet.


  • Innovative collapsible bottle is perfect for any on-the-go activity; store it in a jacket pocket or backpack pocket, or just carry it in your hand with the soft finger loop
  • Hydrapak SoftFlask 750 Outdoor Collapsible Bottle features a bite valve for no-drip use when you're on the move


View all Hydrapak Running Water Bottles

REI membership


Best Use Running
Liquid Capacity (L) 0.75 liters
Liquid Capacity (fl. oz.) 25.3 fluid ounces
Dimensions 4.25 x 10.5 inches
Water Bottle Material Soft Plastic
Material(s) Thermoplastic urethane
BPA Free Yes
Bottle Opening Narrow
Water Bottle Cap Type Bite Valve
Collapsible Yes
Weight 2.4 ounces

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We stand behind everything we sell. If you are not satisfied with your REI purchase, you can return it for a replacement or refund within one year of purchase.

REI's guarantee doesn't cover ordinary wear and tear or damage caused by improper use or accidents.

If your item has a manufacturing defect in its materials or workmanship, you can return it at any time. See our limited warranty.

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*10% is typical but not guaranteed. Your refund is based on eligible purchases, which exclude REI gift cards, services, fees, REI Adventures trips, REI Garage, and discounted items. Learn more