Locking Cap - 42mm
Soft Flask Replacement
Shipping $45+
Returns
Guarantee
This replacement cap features a high-flow bite valve which auto-seals after each sip and includes a twist locking cap for added security. Fits all HydraPak products with a 42mm opening including the SoftFlask 500ml hand held, Stash 750ml bottle, UltraFlasks, and Seeker water storage containers.
COMPATIBLE GEAR
SkyFlask™ 500ml
MINIMALIST HANDHELD HYDRATION
Shipping $45+
Returns
Guarantee
Take matters into your own hands with the SkyFlask™ 500ml handheld. Designed for the minimalist runner, the SkyFlask is lightweight and easy to hold with an adjustable hand strap for a more precise fit. It has a twist locking cap, high-flow bite valve, and large opening for rapid refills. Your next PR awaits.
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ADJUSTABLE HAND STRAP
The ideal hand-held solution for running, adjustable strap cinches down to fit different hand sizes
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COMPRESSIBLE
Soft design shrinks as you drink, reducing water movement and easily stores in your pocket when empty
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LOCKING CAP
Leakproof, twist-locking cap for spill-free transport
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LIGHTWEIGHT
Flexible design makes it light and compact
UltraFlask™ Speed 500ml
Vest Compatible Hydration
Shipping $45+
Returns
Guarantee
Part of our ultra-light series, the 500 ml is so light, you might forget you brought it. Weighing in at just over an ounce, it’s optimal hydration, no matter what kind of runner you are. Its pliable material conforms to most pockets, it shrinks as you drink to minimize water movement and it can be used with or without the tube. Topped with a new feature, the SpeedFill™ cap, makes aid station refills a breeze. Ultra light weight, ultra useful.
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COMFORTABLE FIT
Soft material conforms to most hydration vests, belts, or pack pockets
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COMPRESSIBLE
Flexible design shrinks as you drink reducing water movement
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CUSTOMIZABLE HYDRATION
Choose between a bite valve and a drink tube cap
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SPEEDFILL CAP
Topped with a flip top cap for fast refills at aid stations
UltraFlask™ Speed 600ml
Vest Compatible Hydration
Shipping $45+
Returns
Guarantee
Go big. The largest of our ultra-light series, the UltraFlask Speed 600 ml holds more so you can go the distance. Its soft material allows it to fit snugly in most vest pockets and it shrinks as you drink to minimize water movement. Topped with our newest SpeedFill™ cap feature that makes aid station refills a breeze.
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COMFORTABLE FIT
Soft material conforms to most hydration vests, belts, or pack pockets
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COMPRESSIBLE
Flexible design shrinks as you drink reducing water movement
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CUSTOMIZABLE HYDRATION
Choose between a bite valve and a drink tube cap
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SPEEDFILL CAP
Topped with a flip top cap for fast refills at aid stations
UltraFlask™ Speed 600ml
2-Pack
Vest Compatible Hydration
Shipping $45+
Returns
Guarantee
Go big. The largest of our ultra-light series, the UltraFlask Speed 600 ml holds more so you can go the distance. Its soft material allows it to fit snugly in most vest pockets and it shrinks as you drink to minimize water movement. Topped with our newest SpeedFill™ cap feature that makes aid station refills a breeze.
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COMFORTABLE FIT
Soft material conforms to most hydration vests, belts, or pack pockets
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COMPRESSIBLE
Flexible design shrinks as you drink reducing water movement
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CUSTOMIZABLE HYDRATION
Choose between a bite valve and a drink tube cap
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SPEEDFILL CAP
Topped with a flip top cap for fast refills at aid stations
- 42mm replacement screw cap
- High-flow bite valve auto-seals after each sip and includes a twist locking cap for added security
- Fits SoftFlask 500ml hand held, Stash 750ml, UltraFlasks, and Seekers
- Easy to clean; top-rack dishwasher safe
- Safe and reliable, 100% BPA & PVC free
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WEIGHT
21.6 g / 0.56 oz -
MATERIALS
TPU, PP, POM, Silicone