Pro Chest Strap - Heart Rate Monitor Belt

Decent chest strap, nice tight fittings for the monitor. It is comfortable to wear and with regular cleaning (in the shower, not washing machine) has worked faultlessly (Dec 2025) since its first use (March 2025). Double check the size, they tend to be on the small side.

This is easily the most comfortable chest strap I’ve used. The material is soft against the skin and doesn't chafe even on long 2-hour sessions. The M-XXL size has plenty of adjustment range and fits perfectly. It’s also very easy to pop the sensor in and out for washing. Reliable, accurate, and stays exactly where you put it.

Comfort fabulous - fits well, no seams or raised areas to chafe. No irritation from plastics used. Clasp is excellent. Easy to use and secure Hr measurement reliability in use is great. It is consumable / textile - so lasts in proportion to use and care... Wash in accordance to instructions, as harsh washes accelerate wear. Pull the H10 off with care so poppers stay bonded. These will help extend life. I do wish polar would look into durability - other straps do last much longer (although don't read as reliably or fit so easily and comfortably)..

great replacement for a tired strap

Good contact and hence gives real readings of heart rate.

I bought this strap to replace the strap from my Garmin HRM run. The module from my Garmin fits into this strap fine (see first two photos). The space between the 2 metal connectors must be ever so slightly smaller on the garmin as the polar belt has a very tiny kink in it which can be seen in the second photo. This has absolutely no impact on its effectiveness and can’t be felt at all while wearing it. The problem I had with the Garmin strap is that it would show a very high heart rate between the 2-3 and 9-10 minute mark and then drop down to a normal reading. It would also suffer from spikes in heart rate that were far higher than my max heart rate. You can see these on the third photo. With the Polar strap I’ve had none of these issues. Consistent heart rate readings the increase and decrease as expected with me perceived effort. I’m about 10 runs in now and it’s been rock solid throughout. Can’t complain.

So I've had this strap since July 2024. Since then I have done 176 workouts. Usually either kettlebells, kickboxing or the occasional 1-3mile run. I did have no problems until recently, however, over the last few weeks i've had a number of connection issues and cut outs mid workout and its driving me mad. It's getting to the point where my H10/strap is more unreliable than reliable. In the last three to four weeks ive had 6 times when the strap/H10 has stopped tracking my HR and does not recconect. This seems to be a common problem going by searches on google and reddit and google. But I cannot seem to find a fix. I often get a sold red heart with a solid red circle around it on the "start" screen on Polar Flow or Polar Beat. When It does this its very tricky to fix. I've tried disconecting the H10 from the strap, restarting my phone, taking the battery out of the H10, doing the reset thing with the two silver prongs. Sometimes it resets and starts working and sometimes it doesnt. I'm also getting random cut outs during my workouts which is infuriating. The H10 will be tracking fine and then all of a sudden it will stop tracking completely. I look after it as per the instructions and i've changed the battery more times than I can remember. I've checked the strap and there is no wear and tear on the strap at all. Its a useful tool, but like I say its becoming more unreliable than reliable.

Having gone through numerous replacement straps for a Garmin HRM, this one definitely seems the best. Sturdy and comfortable to wear this strap appears not to suffer the drop outs or inaccurate readings of cheaper options (including the official Garmin offering). Technically, it's not a perfect match for the Garmin sensor but it does fit and definitely works. Watch out for sizing though. You'll probably need a bigger one than you think. I'd normally think that 2XL would be far too big so I thought "M to 2XL" would definitely fit someone that needs Castelli XL or Endura L. But no, this one is only just big enough. P.S. Thanks for the tip "DC Rainmaker. com" (all one word)!

works well and is durable too

Perfect fit. Works well

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Confort

価格の安い中華物も出回っていますが、肌に直接つけるものなので純正品を選んでいます。モチベーションを上げる的なものです。安いものでもよほど品質が悪くなければちゃんと心拍はとれますから、消耗品と思えばそっちでもいいのでしょうけど、私は30年以上Polar製品ばかり使ってきてるので、メーカーを応援するためにも純正品を買うようにしています。 お値段は少々高いですけど、細かい部分の作りや素材はいいですよ。毎日2〜3時間使っても手洗い、タオルで軽く脱水、陰干しをこころがければ1年は持ちますから、本気で運動している方なら許容範囲の価格だと思います。