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Cardio Running Crop Top

Sale price: $10.00 Regular price: $24.99

Thanks to the built-in heart rate monitor belt in the elastic under the bust and the seamless cups, irritation is reduced! Attention, the clip-on transmitter and the watch are sold separately

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This product runs small

Sale price: $10.00 Regular price: $24.99

Free shipping over $49

Final Sale: No returns or exchanges

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San Francisco, 735 Market St. Options

Select an available color and size to see options.

Model: 8353053

Product Videos

Product Features

A photo of the Cardio Running Crop Top in use

Cardio Running Crop Top | For runners seeking support with a built-in heart rate monitor.

Thanks to the built-in heart rate monitor belt in the elastic under the bust and the seamless cups, irritation is reduced! Attention, the clip-on transmitter and the watch are sold separately

Chest support

Superior support for high impact sports. Reduces bounce by 35%*

Measurement settings

Heart rate monitors built into the elastic.Transmitter and watch sold separately

Irritation reduction

Made using ”seamless” technology in a single piece.

Moisture wicking

Absorbent material wicks away perspiration.


3-position hook fastening at the back for adjusting the size below the bust

Questions & Answers

Product Customer Reviews

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385 Reviews
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Cardio Running Crop Top,dark gray
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Very cool product

Love the built in HR monitor. Works well with my garmin device and way more comfy than the extra strap! Could be improved by a more comfy garment design, something easier to put on and take off, and some style improvements. I like this product, but would really like to see the built in HR in a greater range of the sports bras.

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Great built-in HRM but still chaffing around HRM

I love my HRM bra however chaffing does occur around the HRM when it wasn't happening with my normal HRM band on runs >10kms. Wearing a 1st aid band helps with the issue though.


I love it. I use with Polar M400. I am angry because I don not buy on the website and I have never found to a store

good buy

works with my garmin & saves wearing a separate heart strap

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Great value product

A great way to attach your HR monitor without having to mess around with a chest strap. I use mine for cycling and have bought two more as I was so impressed. I would size up, though, as they come up small. No-one else makes anything like this at this price. Bargain!

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Excellent product

I had been looking for a bra with a built in heart rate monitor for some time, so was delighted when I found this product at such a reasonable price. So much more comfortable than wearing a chest strap beneath a normal sports bra! The bra is very supportive and the fit is good for me. I bought a medium and am usually 34C or 32D. Please never stop selling this product as there are few alternatives available!

Great but more for cycling than running

It works fine with my Garmin monitor - but wouldn't say the support is enough to run - and I'm not at all busty! I will use for cycling / indoor training.

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Kalenji Women's Running Crop Top with HRM

Kalenji Women's Running Crop Top with Heart Rate Monitor - Grey/Pink. Comfortable and supportive, this removes the need for a separate chest strap with my Polar M400 GPS watch. It was recommended to me by one of the staff in my local store and I liked it so much I went back and bought another one! I only wish they sold them in white/lighter colours too. I wash it in the machine at 30C with no problems. The only negatives are minor issues that can be resolved. The top does have a lot of labels which I find irritating but you can cut them out. Also, I am not keen on shops that stitch on temporary cardboard labels i.e. for size, as they are fiddly to remove/cut out without damaging the product.

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At last!

This sports bra is great for those who wear a HRM. It is so much easier to just wear this rather than a sports bra and HRM strap. No squeezing HRM under sports bra anymore, no risk of the HRM electrodes slipping down and losing connection, no strap chaffing! Well done Decathlon!

Bye bye chest strap

I use this with the Polar H7 transmitter and works great


Mnohem pohodlnější než klasický HR pás. Kompatibilní s Garmin i Polar měřičem. Mám ve velikosti S, budu muset koupit kvůli kojení i velikost větší, tak doufám, že bude také tak pohodlná a měření bude přesné.

Plní mé očekávání

Kompatibilní s garmin. Používám jí cca měsíc a neměla jsem problém s měřením TF. Oblečení nosím vel. 40 a největší velikost podprsenky L mi je dost těsná. Uvítala bych ještě jednu velikost :)

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Perfektne sedi

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macht was er soll, Etiketten unpraktisch eingenäht

Der BH erfüllt seinen Zweck. Leider sind die Träger nicht verstellbar. Die Art und Weise, wie die Etiketten auf der Innenseite des Verschlusses eingenäht wurden, ist nicht optimal. Man riskiert Rötungen, da man die Etiketten nicht vollständig entfernen kann.

Super Sport Bh

Ich liebe ihn . Super trage Gefühl .

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Size Guide

Size Guide Visual

Additional Product Information


Main fabric: 9.0% Spandex, 55.0% Polyamide, 36.0% Polyester cationic


Please note the HRM transmitter is sold separately.HRM sensors built into the elastic of the chest band are compatible with heart rate monitors with a belt and a removable clip-on transmitter.The sports bra may be compatible with Géonaute and Polar branded products as well as most other brands, however, it is important to check compatibility prior to purchase or use when buying over the Internet.

User guide

Clip the transmitter onto the crop top before or after putting it on, then as with a standard HRM belt, slightly moisten the 2 ”electrode” strips located inside the elastic just below the bust.

How is the maximum level of support (level 5 on a scale from 1 to 5) guaranteed?

All our products are passed by our bust support test (measurement of the decrease in breast bounce when running) conducted in our laboratories. They are evaluated and given a rating from 1 (low support) to 5 (high support).Like all the KALENJI models, these sports briefs were given a level 5 rating and are suitable for all HIGH IMPACT sports.*This sports crop top reduces bounce by 35% compared with a conventional bra when practicing HIGH IMPACT sports.

How was this first crop top designed?

We designed a sports crop top for optimum comfort and breast protection:As with all KALENJI models: * we do not use underwiring (risk of injury or of compressing the glands) * we keep the number of seams around the nipples to a minimum (risk of irritation) * we use components that wick away perspiration (this criterion improves comfort while also considerably diminishing the risk of irritation).

What type of cups does the first+ crop top have?

The sports crop top with a heart rate monitor has 2 flexible single-thickness cups (no shell). We also offer sports crop tops and bras with breathable molded cups.

Product testing

Support: the support was tested and approved by testers in the DECATHLON laboratory. Each size was tested separately.Perspiration wicking: the perspiration wicking test was conducted on each material in the laboratory to check that the fabric absorbs and transfers moisture from the inside of the fabric outward and eliminates it.WASHING: The washing and drying tests guarantee good stability (dimensional stability and colorfastness)



Superior quality. Unbeatable prices.

For 40 years, Decathlon has delivered the best value in the retail sports industry by offering high-quality, sustainable and cost-effective products.

Decathlon makes the difference
  1. product-research

    Research and development

    delivers high-quality cost-effective products

  2. State-of-the-art production processes

    minimize manufacturing costs

  3. Optimized supply chain

    reduces retail prices

  4. laptop-checkout

    Minimal retail footprint

    lowers overhead and indirect costs


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