5.0/MG SportFlex – Waterproof, Sweatproof, Silicone Accessory for Health, Fitness, & Wellness Wearable – Not Compatible with Gen 4

Good as expected. Recommended for sports.

great fit, comfortable for tennis even in the hitting wrist

The bracelet is perfect. It’s worth the investment. It arrived in perfect condition.

Very good design very well made

Way better than the cloth bands!

Good quality but the adjustment notches are too far apart and it's not possible to dial in a good fit unless your wrist sizes perfectly to one of the notches. On one notch it's uncomfortably tight but if I loosen it one hole it's too loose and I don't get good data. It's a shame because I wanted to like this

Buena calidad original

Way better than the cloth bands. Why its $60 is beyond me. I cant imagine these things having a lot of cost to make them. The cost brings it down to 3 stars for me. I feel taken advantage of. Its a piece of rubber.