Amazfit Helio Strap Vest Midsole: DNA Tuned dual-cell cushioning

Midsole: DNA Tuned dual-cell cushioning foam

and unexpected adventure

Bungee elastic cord system for secure load management

MTB Grit & Flow metrics for mountain bike performance

flexible flask shapes to fit your pocket for extra comfort and shrinks as you drink to minimize water bounce

Amazfit Helio Strap Vest Midsole: DNA Tuned dual-cell cushioningThe Amazfit Helio Strap is built for athletes who demand accuracy, consistency, and meaningful insightswithout subscriptions or ecosystem lock in. Worn day and night, it delivers continuous per second heart rate tracking, advanced recovery metrics, and energy monitoring through Amazfits BioCharge and BioTracker technologies. Fully compatible with the Amazfit ecosystemincluding smartwatches, the Helio Ring, and the Zepp Appthe Helio Strap ensures