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Aonijie Soft Hydration Flask - in 250 ml or 500 ml

Our soft flasks by Aonijie are flexible and compress as you drink to eliminate water bouncing/sloshing inside and reduce sucking effort. Easy to squeeze - with bite valve. Carry this soft water/gel flask in your hand, shorts pocket or race vest pouch. Carry gels, water, electrolytes and other fluids in them as well! Made from TPU, these flasks are BPA and PVC free!