Breathable Nylon Sport Band/Strap for Amazfit Helio Tracker | 2-in-1 Wristband & Bicep Strap Set | Adjustable Elastic Replacement Strap for Fitness & Sleep Tracking | Sweat-Proof & Lightweight

Completely disfunctional you physically can’t put it on as it on as it is the wrong way and the clip that you put the helio in is loose. DO NOT BUY

I have a tiny wrist and this fits just perfect! And very comfortable

Very confusing to set up to wear. It does not include any instructions, and it does not work 'out of the box'. You need to remove the little hoop thing, then look carefully at the main image here on Amazon, and adjust the straps yourself to match the picture. More complex than it sounds, genuinely! But you can do it. I don't blame other reviewers for saying it doesn't work, because I was under the same impression at first.Now in terms of the quality of the item: It's good. The strap feels decent - not 'very premium' but solid and decent quality. However, the actual holder for the heliostrap device is very good - feels a solid metal, and the little loop/hoop thing is also metal, and solid.And finally, the adjustment mechanism to tighten or loosen it on your wrist: It's a bit fiddly. You don't tighten it by undoing the velcro, tightening and then redoing the velcro, like the official strap. Becaue there is only one position for the velcro fastener. The way to tighten is my kinda pulling slack through the one side of the device holder, and then pulling the slack tight through the other side via the separate hoop. Hard to explain, but it make sense when you do it - it's kinda like when you adjust a sling back strap, or a backpack strap. But again - this produce comes with literally no instructions at all, so you need to figure this out.One positive (for some) for this design is that, the strap can expand to quite large overall. So you may be able to keep it on, adjust it to its widest setting, and move it up to your bicep / upper arm for tracking there during an activity! I tried this, and it works - but it likely won't work if you have big arms, because it already feels a bit too tight on my bicep and I have very average arms. Would be ideal for skinny-arms guys and girls though.So overall, I like the look of it, but it's definitely fiddly compared to the official one. The lack of instructions does not help at all.

Horrible can’t even put it on my helio strap. It doesn’t work it’s like twisted. Not even a tutorial too. Horrible product. waste of money

This sport band performs very well and feels comfortable enough for all-day wear during workouts, walking, or sleep tracking. The nylon material is lightweight and breathable, which helps reduce sweat build-up during exercise. The adjustable fit works well on both the wrist and upper arm, giving flexibility depending on activity type. The tracker stays secure during movement, and the elastic material feels soft without becoming uncomfortable over longer sessions. Overall, it is practical, comfortable, and offers excellent value for money.