Women's Running Crop Top with Heart Rate Monitor - Grey/Pink

Ref :
Key feature
No more chafing thanks to the HRM built into the bust elastic and the seamless cups. Attention, the clip-on transmitter and the watch are sold separately
Users reviews
4.7 / 5 3 ratings



You need:

- a transmitter (sold here)

- a receiver (heart rate monitor Ant+ or bluetooth phone* with an application)

*Smartphone compatibility

Starting up

  • - Moisten the electrodes (strip inside the product, pectoral part)
  • - Put on your T-shirt / crop top
  • - Clip the transmitter onto the 2 poppers 4.5 cm apart (universal grip system)
  • Fit the transmitter to a heart rate monitor (Ant+ technology) or a smartphone with an application* (BLE - Bluetooth Low Energy - technology)


You are ready to start running!


* Some applications, such as "Decathlon Coach", are free

Available on Apple Store and Google Play


Products benefits

Chest support
Support approved for high impact sports.
Parameter measurement
Heart rate monitors built into the elastic. Transmitter & watch sold separately
Reduced chafing
Made using "seamless" technology in a single piece.
Moisture management
Absorbent material wicks away perspiration.
3-position hook fastening at the back for adjusting the size below the bust
Quick drying
Quick natural-drying fabric.


Main fabric : 55.0% Polyamide (PA), 36.0% Polyester (PES), 9.0% Elastane
On average, Kalenji underwear provides 28% MORE support than a standard everyday bra.
Designed to :
FEMALE RUNNERS seeking support with a built-in heart rate monitor.
2 years


Maintenance advice
Warning: do not tumble dry as to do so could render the electrodes section unfit for use. Wash at 30°C maximum with similar colours and with liquid detergent only. Do not use fabric softener as it damages the breathable properties.

Additional information

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 two "electrode" strips located inside the elastic just below the bust.

Users reviews

4.7 / 5 3 ratings
3 users recommended this product
Distribution of ratings
  • Woman
    20 February 2017
    Use since 2 to 8 weeks
    That review has been deposited on this product version
    purchase confirmed
    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.

  • Woman
    40-49 years old
    23 May 2016
    Use since 3 to 6 months
    That review has been deposited on this product version
    purchase confirmed
    Kalenji Women's Running Crop Top with HRM
    Built-in HRM removes the need for a chest strap Only currently available in dark colour

    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.

  • Woman
    30-39 years old
    03 March 2016
    Use since 2 to 8 weeks
    That review has been deposited on this product version
    At last!
    No more HRM strap chaffing, or strap slipping down N/A

    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!

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