Ideal for quick drinks on the run. Gobble up a gel, wet a dry throat, or re-hydrate. Designed to be used while running, and all of us who can't stay in place! Stores directly in your front, side, or back pockets. FITLY Flasks shrink as you drink so nothing ever moves, bounces or rattles.
No liquid bounce - Soft bite to quick flow
Shrinks as you drink
Leak resistant and rigid cap ring for easy refill
Light, durable, built to last - 100% BPA & PVC free
Ideal to drink on the go
5 models to choose from:
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FLASK150 (5 oz 150ml - 5.5 x 2.75 in): small enough to fit in FITLY's SUB45 front pockets for quick access.
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FLASK250 (8.5 oz - 250 ml - 7.5 x 3.5 in): when you need a little more.
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FLASK350 (12 oz 350 ml - 8.75 x 3.5 in): longer flask, same width as FLASK250.
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FLASK400 (13.5 oz 400 ml - 8 x 4 in): go farther, take more.
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FLASK500 (17 oz 500ml - 8.5 x 6): an ingeniously low profile design to use as a standalone soft flask (screw-on mouthpiece included) or with the 23 in (58 cm) tube with its clever mouthpiece. Important: FLASK500 is custom-designed for Sub90 and is too big for Sub45.
- COMBO = 1 FLASK150 + 1 FLASK250 + 1 FLASK350 + 1 FLASK400
How to use
Softly bite the mouthpiece - press the flask - suck on the goodness!
The more you press, the faster the liquid will exit. The walls collapse as you drink letting you absorb almost 100% of its content.

Quick note: avoid mixing any liquid container with electronics.