SFuels™ soft flasks are a convenient, lightweight flasks perfect for storing your
SFuels™ nutrition in concentrated format.
BPA Free with a quick bite easy flow drinking nipple the SFuels™ soft flasks are super light weight (1.3oz – 37gms) and easy to store in your running vest, race belt , suit or jersey.
- Pre-load Soft Flasks with concentrated SFuels™ Race + Optimization Guide – Pages 18 & 19 - For longer races you can preload initial soft flask with Race + and water. Then place additional soft flasks with Race + powder only (no water). Add water to your refill soft flasks from aid stations through the race