What are sizes for polar heart rate monitir

I'm super emasculated by Anonymous as a man with a 32" chest. The medium was too big after some uses given they stretch out. These need to fit quite snug enough that they are slightly uncomfortable and after about 5 minutes the uncomfortableness goes away. Just tight enough not to slip is NOT tight enough if you want consistent, accurate readings. Also, check to make sure it is snug throughout your entire breathing cycle. A snug fit might feel loose when you breath very hard. I now wear the XS-S with it set at a 25" circumference which with a 7" stretch. It still feels very comfortable (meaning I never noticed it) on my 4 hour+ mtb rides, though it's quite tight when I first stretch it on. This tight fit does not leave any marks on me, and I expect after about 10 more rides I'll need to shorten it up another inch, so make sure you have room to snug it up. The M-XXL once clasped is 28.5" to 36.5" at it's longest adjustment. Add normal 6-8" inches of stretch, and you should be able to tolerate an appropriate fit at least up to 44.5", and probably larger. I think you guys with the mid 40" chest may not be used to how these straps should feel since the M-XXL is at least a couple inches big for me on its tightest adjustment. FINALLY ******Too bad we even have to ask and answer this question though. It's super disappointing Polar does not accurately post what chest measurent range each size strap properly fits (not too tight, not to loose), how to take a proper measurements, and how to test you have a proper fit. We shouldnt each have to waste time googling. searching their documents and website, contacting their support, reading reddit, and asking amazon users and still not find a good answer. And it's sad the one person from polar that responded here just through up a stretch range for each without more commentary on getting the proper size. I hope Polar will respond and put together a useful document for proper sizing.********

Does the strap provide continuous heart rate monitoring? Can I wear it 24/7?

You can wear it 24/7. Having worn a medical chest ECG monitor for 10 days, it was a bit awkward at first but got used to it. Depending on your expectations, such as accuracy, a chest monitor can't be beat. Tried wearing Fitbit Charge 5 and Apple iWatch 6 simultaneously during HIIT sessions for months, they both varied as much as 10 bpm from the other. Decided to go with chest monitor.

To those with experience changing battery, is the flip cap easy to open/close? H7 used a coin slot on soft plastic, so edges rubbed off=hard to open

I found the H7 to be of the poorest design compared to the ease of changing the battery in the H10. I can’t tell you how many of my clients disliked the H7. I think you will love the ease of the H10 battery replacement.

What app do u download w the heart monitor?

Hi Christy, the Polar H10 is compatible with many apps and devices, the two Polar apps you can use are Polar Beat or Polar Flow, both can pair to your H10 Sensor so you can view and record your training sessions.

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Reviews

A**K

Amazing Tracker

Excellent Product to Keep Track of Metrics

26.02.2026

J**C

The Gold Standard of HR monitoring.

I use this to monitor HR for my conditioning sessions with the barbell or kettlebell. I used to use a Huawei watch GT4 which was great at monitoring HR but would undercount once it got above 170. This doesn't have any such problems and recognizes it correctly until 200bpm. I use Polar Beat though, you'll have to see how it works with other apps. Best part is it sends data to my watch in addition to my phone. So, I can take off my watch during the kettlebell snatch sessions. I've been using it for like 5 months, the battery is still said to be good and have no problems.

16.01.2026

B**L

Strap it on

Polar is just amazing. Close your eyes and go for this one. For any extreme activity just ditch your watche's monitor and use this one as it gives perfect reading unlike wrist based. Quality of strap is great.looks cool, especially in red .battery life is amazing. Get it at a discount if you can.

13.11.2025

D**S

Polar should provide atleast few support services in India

It worked well initial 2 months. It stopped working properly, so assuming battery drained , bought a CR2025 battery strip and changed battery. Still it stops Heart beat reading suddenly. I just used/wore 1 or 2 hours daily during activity tracking. And wash it gently after wards, as it is advertised as water resistant till 30 meters. Now this stopped working not sure what to do . 9000 bucks , is it really worth in India, not sure Polar has 2 supporting android apps like Polar Flow, Polar Beat and Polar Equine. There is no proper ECG analysis kind of tool too. Just ECG reading can be collected.

12.07.2025

P**R

Need to test physically

5.09.2025

A**Y

Super ECG based Heart Rate Monitor

Working perfectly as expected. Seamless connection with Bike computer(Coospo BC200) as well as Smartphone (iOS as well as Android). Smooth tracking of heart rate by Strava, Adidas Running, Polar Beats & Polar Flow apps. Upon registering through Polar Flow app additional 1yr warranty is offered along with existing 2yrs warranty. Compared heart rate with optical sensor based sports watch (Galaxy 4 and Garmin). Heart rate readings fluctuates on watch due to optical sensors whereas with ECG based Polar it’s stable. Used it while cycling with Road bike & kept monitoring heart rate on bike computer. Comfortable strap & glitch free functioning. Polar is unbeatable brand.

11.03.2025

V**L

The Gold standard of HR measurement

Highest HR accuracy and reliable product. Easy to replace battery and quick setup using polar flow app.

11.10.2025

A**A

Exact Measurements

Gold standard in its category

3.03.2026

ASIN	B07PM54P4N
Battery Average Life	8 Days
Battery Description	Lithium-Ion
Best Sellers Rank	#1,658 in Sports, Fitness & Outdoors ( See Top 100 in Sports, Fitness & Outdoors ) #1 in Running Heart Rate Monitors
Brand	Polar
Brand Name	Polar
Colour	Black
Compatible Devices	Laptops, PC, Smartphones, Tablets
Country Of Origin	China
Customer Reviews	4.2 out of 5 stars 18,090 Reviews
Display Size	0.96 Inches
Global Trade Identification Number	00725882051291
Importer Contact Information	Luxury Personified LLP
Item Type Name	Heart rate Sensor
Item Weight	60 Grams
Manufacturer	Polar, Polar
Manufacturer Contact Information	Polar
Material	Silicone
Material Type	Silicone
Model Number	92075957
Packer Contact Information	Polar
Screen Size	0.96 Inches
Sensor Type	Pulse Sensor
Team Name	Polar
UPC	725882051291
Unit Count	1 Count
Warranty Description	2 Year Manufacturer
Whats In The Box1 - Whats In The Box3	Polar H10 Chest Strap

Polar H10 Heart Rate Monitor Chest Strap - ANT + Bluetooth, Waterproof HR Sensor for Men and Women-Black M-XXL

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