MIER Running Hydration Vest with 500ml BPA-Free Soft Flask is built for runners, cyclists, hikers, and endurance athletes who need hydration and storage without bulk — and right now it's just $20.00 (marked down from $39.99) at Cooler & Crumb. Buy online today, apply coupon CRUMB15 for an extra 15% off, and lock in this limited-time running deal with free shipping on orders over $45.
Fit & Bounce-Free Performance
The number one question runners ask: how should the MIER hydration vest fit to prevent bounce? Adjust the side and shoulder straps so the vest sits snug against your torso without restricting breathing. The lightweight breathable neoprene body conforms to your frame, and a secure fit keeps the 500ml soft flask and your essentials locked in place — no bounce, no chafe, no distraction on long runs or rides.
Storage: Phone + Soft Flask
Yes — the vest holds a large phone alongside the included 500ml soft flask. Multiple pockets organize gels, keys, cards, and nutrition so everything stays accessible at full speed.
Specifications
- Brand: MIER
- Product Type: Running hydration vest with soft flask
- Flask: 500ml BPA-free soft flask with easy bite valve
- Material: Lightweight breathable neoprene
- Fit: Adjustable, unisex sizing for women and men
- Use: Running, cycling, hiking, marathons, trail races
Is the 500ml Soft Flask Leakproof?
The soft flask uses a sealed bite valve that only opens when you bite and sip — no leaking in your pack, no spills mid-stride. As you drink, the flask compresses to stay compact and quiet.
Fit for Small Women and Tall Men
Adjustable straps across the shoulders and sides let the vest dial in from petite frames to taller torsos. Check the size chart, then cinch for a custom, bounce-free fit.
Price & Deal Value
At $20.00 vs. the $39.99 compare-at price, you save nearly 50% before stacking the CRUMB15 coupon. Comparable branded hydration vests with flasks sell for far more — this is the affordable, deal-led way to gear up. Add a second item to clear the $45 free-shipping threshold and save even more.
