Size Guide

Ideal for a quick drink on the run. Gobble up a gel, wet a dry throat, or rehydrate. 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

The models included in the combo are:

  • FLASK150 (5 oz 150ml - 5.5 x 2.75 in): small enough to fit in FITLY's SUB45 front pockets for quick access.
  • FLASK250 (8.5 oz - 250 ml - 7.5 x 3.5 in): when you need a little more.
  • FLASK400 (13.5 oz  400 ml - 8 x 4 in): go farther, take more.

How to use:

The mouthpiece or nipple has a soft and hard section. Softly bite the soft part to release the liquid - press on the flask or suck on the goodness!

The more you press, the faster the liquid will exit. The walls collapse as you drink, allowing you to absorb almost 100% of its content.

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