Withings Sleep Tracking Mat & Heart Rate Monitor

Model Number: WSM02-All-US
Web Code: 13460154

Withings Sleep Tracking Mat & Heart Rate Monitor


Enjoy improved sleep so you can experience better days with the Withings sleep pad monitor. This sleep monitor slips right under your mattress and tracks your sleep cycles, heart rate, breathing disturbances, and even snoring. It analyzes your data to provide you with customized reports and coaching to help you achieve better sleep.
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Enjoy improved sleep so you can experience better days with the Withings sleep pad monitor. This sleep monitor slips right under your mattress and tracks your sleep cycles, heart rate, breathing disturbances, and even snoring. It analyzes your data to provide you with customized reports and coaching to help you achieve better sleep.

  • Rest easy: Installs effortlessly under your mattress for fuss-free sleep tracking
  • Automatic synchronization: Wake up to all your sleep data in the app via Wi-Fi to see if your sleep was restorative
  • Monitor your sleep: Sleep-expert validated algorithms analyze the data including your sleep cycles, heart rate, snoring, and breathing disturbances to give you your daily Sleep Score
  • Sleep better: Personalized coaching through the Health Mate app helps you to achieve a better night's sleep
  • Improved sleep environment: Sleep sensors can control lights and thermostats for the perfect resting conditions
  • Personalized coaching: Sleep Smarter in-app coaching program can help you improve your sleep schedule to reduce fatigue, improve health, and create a balanced lifestyle
  • Alexa, ask Withings: Withings users can add Alexa Skill to discover more about their daily, weekly, and yearly sleep trends and check in with progress
  • Medically accepted: FDA cleared and compliant with European medical device regulations
Primary Function
Sleep Monitor
Device Type
Sleep Monitor with Heart Rate Monitor
FDA cleared; Clinically tested


Heart Rate
Sleep Tracking


Illuminated Display




App Enabled
Works with Amazon Alexa
Android Compatibility
Android 6+
Mac iOS Compatibility
iOS 10+
Companion App Required

Other Features

6.22 cm
19 cm
0.5 cm
274 g
  • Withings Sleep Pad
  • USB Power Adapter
  • Quick Start Guide

There is no manufacturer content to show for this product. Explore the Details & Specs and Customer Reviews sections to learn more.

Rating Breakdown











Reviewer Recommendation


Of the 75 reviewers who responded, 65 would recommend this product.

Key Considerations

Averages based on how reviewers feel this product performs.

Ease of Use:


  • Best sleep tracker! Nothing bulky to wear!
    Reviewed by ShawnInKB - July 16, 2019

    [This review was collected as part of a promotion.] So much better than wearing a watch! Tracks your different stages of sleep, heart rate throughout the night, if you snore and for how long, how long it takes to go to sleep, how long to get up, and ranks your sleep! Super easy to setup. Took only about 5 minutes! Just put under your mattress directly under where your chest is at night and plug it into an outlet. Install the app and it automatically detected the mat. (Note it goes through a calibration phase that takes about 10 mins at initial setup, but you don't need to wait for that - it'll do that on it's own.) That's it, then just sleep like normal! No bulky watches or straps to sleep with. I tried a few of the smart watches with HR monitoring that can also track your sleep, but I find them uncomfortable and they ended up waking me up when turning during the night etc. - kind of the opposite of what you're looking for! This is so much better. App is easy to use and gives you a great summary of your sleep and scores it based on a bunch of factors. You can even setup smart home functions with IFTTT (if this, then that) like turn down the thermostat when you get into bed.

    Review originally posted on bestbuy.com

    Yes, I would recommend this to a friend.

  • Great Product
    Reviewed by CMCMom29 - July 21, 2019

    [This review was collected as part of a promotion.] I was excited to try the Withings Sleep Tracking Mat. I’ve suspected that my quality of sleep wasn’t that great, so I wanted to see if I was right. I was so excited, in fact, that I initially expected to be disappointed. I had a hard time opening the sleeve around the box, so I had to rip it off. This may be a theft-deterrent measure, but I’m not a fan of it. Customers shouldn’t have to fight the box to open it. The unit is quite simple. It comes with a mat, a charging cable (a USB cord attached to the mat), and USB receptacle to plug into the wall. At first, with this cable set up, I thought this was rechargeable and possibly I had to charge it first. I couldn’t find a reference to this, though, so I just plugged it in. The instructions are very simple. Almost too simple, perhaps. The booklet basically covers the installation of the mat and refers you to the app. You are supposed to place the mat under your mattress. I have an adjustable air mattress-style bed so I wasn’t sure if it would work placing it under the air bladder. So, I placed it under the foam topper that I have on my bed, so it was between the foam and the mattress. I got to bed late (this is normal for me). I expected to get about 4-5 hours of sleep. The mat, however, said that I only slept for one hour and 43 minutes. It said I had been interrupted twice (though I don’t remember anything waking me up), and very little deep sleep. It classified me as having a “restless night”. The next day, it did pick up my husband’s sleep as a “nap” (he works 3rd shift). While I could set up an additional profile in the app, I could not assign that sleep data to him. I couldn’t even set it up to a mat device at all. I was disappointed in this lack of feature. I’ve kept the data for now because my only other choice would be to delete it. Fortunately, this only happened once. I’ve been using it for six nights now. I find that I’m fascinated at what it picks up. Some nights, I’ve snored up to an hour per night. It breaks down how long it took me to get to sleep, when I slept lightly, when I’ve had deep sleep, and when I was in REM sleep. It does say that I’ve had several breathing disturbances during most nights. This is not a diagnostic device, so I don’t know what they are caused from; it doesn’t go into that level of detail. My husband has sleep apnea, so I am familiar with the condition. The app has some informational articles about apnea, such as a list of symptoms. It also explains what other conditions might be causing the issues. I find that this would be a good tool to share with my doctor when I see them next. I wish there was a way to export the data to share with my medical providers, but so far, I’ve not found that option. I would recommend that the manufacture consider adding that feature. Overall, I’m very impressed with this unit. I plan on using this every night from now on. I launch the app each morning when I wake up so the data transfers (via Bluetooth) and I can see my results. I would recommend that anyone who is interested in sleep tracking get this product. I can see it would be easy to pack and travel with as well. You can plug in your wrist tracker to charge and use this unit instead.

    Review originally posted on bestbuy.com

    Yes, I would recommend this to a friend.

  • No more silly watches to wear!
    Reviewed by TonyMSP - August 2, 2019

    [This review was collected as part of a promotion.] I liked my old fitbit that tracked my sleep but that means I had to constantly wear a device to monitor my sleep. This sleeping pad is a set-it-and-forget-it type of application. Automatic sleep tracking for folks like me who always forgets to set things before slumbering. Pros: • Nothing to wear! • Very insightful app that helps explains my sleep • Works with IFTTT app for cool automation Cons: • None! Get one and stop wearing silly watches to measure your sleep. Setup was a breeze. Take it out of the box and place it between your mattress and your mattress base. I was worried that it wouldn’t work with my foam mattress but it works like a charm. The sensors are so sensitive that it’s able to tell me about breathing disturbances, heart rate, and how restful your sleep was. Since the pad is only wide enough for one side of the mattress, the sleeping mat doesn’t register my wife’s movements on her side. The app is very robust and helps me explain why im feeling groggy or energetic the next morning. It scores you on duration, how much deep sleep vs light vs REM you had, and also if it sensed any breathing irregularities. It even keeps track on how often you snored too. A bonus feature besides measuring your sleep performance for data geeks like me is the IFTTT app integration. This means I can create a rule that if the sleep mat detects that im sleeping, the app will arm my Arlo cameras to record any motion I have in the garage, etc. So cool! If you’re a data geek or just curious on how well you’re sleeping through the night, this sleeping mat is for you!

    Review originally posted on bestbuy.com

    Yes, I would recommend this to a friend.

  • Novel product but Metrics not very useful
    Reviewed by ITJim - July 26, 2019

    [This review was collected as part of a promotion.] Purpose: I typically sleep fine. My wife, on the other hand, does not. She tosses and turns, snores, and usually wakes up fatigued. She also refuses to believe me when I tell her she is snoring. She has a Fitbit to track heart rate. But it does not offer anything other beneficial metrics when it comes to sleep. Then, I caught wind of the Withings Sleep Tracking Mat. It monitors heart rate, sleep cycles, and snoring. Setup: The device is a small mat with an air bladder. The device unfolders and lays flat between the bottom of the mattress and the box spring. We have a temperpedic memory phone mattress. It is heavy and dense. We were afraid the device would not be able to measure anything through the material. I was afraid it would not be able to detect a heartbeat. It turns out that my worries were unjustified. More on that later. The device must be installed with the cable facing out. There is a microphone near the cable stem that allows the device to detect snoring. The cable is long enough to reach my closets wall outlet. I promptly downloaded the Health Mate app from the Apple store, created an account, and connected to the Sleep Mat. The Health Mate app immediately walked me through setup and calibration of the Sleep Mat. Calibration takes approximately ten minutes. At this point I left the cell phone, with the app active, on my bed and left the room. Ten minutes later the Sleep Mat was ready to go. Experience: Does it work? The Health Mate app does allow for the connection of other sources of metrics from other health tracking apps/devices such as a smart watch. Unfortunately, I did not see an option to integrate anything other than other Withings products. I would have liked to have integrated the data from a Fitbit or Apple Watch with the Sleep Mat’s data. My wife has a Fitbit that she uses to track steps and heart rate. We tested the Sleep Mat over the last week while she wore her Fitbit. We compared heart rate metrics from both apps. We found that the heart rate information matched closely between devices. However, the Health Mate graph does not to be a minute by minute chart like the Fitbit tracker is. I found gaps ranging from five to twelve minutes between readings. Is this correct? It may be the interface for the app is incapable of presenting granular information. I cannot believe the device is capture beats per minute using five to twelve minute intervals. I hope Withings fixes this in their app. We were able to match up a few times during her sleeping sessions. We found that the Sleep Mat and Fitbit data did match during their time periods within a beat or two. Data that my wife and I found interesting are the measurements for light sleep, deep sleep, and REM. This information is represented by a chart showing how intense each sleep cycle is and its duration. You How does it know? I wish there was a clearer explanation than the mat monitors heart rate, respiration rate, sleep cycle, and snoring. It also says it monitors sleep cycles but that seems to be a bucket statement for unspecified metrics that most likely include heart rate and respiration. Finally, my wife mentioned that the app did not capture the periods breaks in her sleep such as poddy breaks or letting the cat out at 4am. The app does report an unbroken night of sleep for 6, 7, 8 hours. It also gave her a sleep score of 90 or above for each night of sleep. The app does have some rudimentary information regarding what you need to know about sleep. There is zero information about how to interpret the metrics. I also found this disappointing. It makes the device and the metrics more novel than useful. There is a generic coaching portion to the app. The information is not personalized based on metrics. Final Thoughts: The device is simple to setup, calibrate, and collect metrics with. It will integrate with other Withings metric collection devices such as their watches. However, there is no education or guidance on how to interpret and then use the information. For example, if the pad detects that I am tossing and turning all night, then identify the pattern for and then give me some suggestions to reduce the activity? Is there an article about anxiety and anxiety relief that may reduce my restless sleeping sessions? Am I getting too much deep sleep? What should I know about sleeping too deeply for too long? Is it a problem? How about snoring four hours a night? There just seems to be a lot missing here that a data driven product should do but does not. I have the data. What is next? I do not feel like this product has an answer yet. Maybe the capabilities I would find most useful are not part of the mobile app yet. It would great if I could share more detailed data with my doctor while I am with my doctor. I can do that with a smartphone and a more robust mobile app. I like this product, I like the metrics, but I cannot see past the novelty.

    Review originally posted on bestbuy.com

    No, I would not recommend this to a friend.

  • Innovative device that goes above and beyond
    Reviewed by recruiter89 - July 17, 2019

    [This review was collected as part of a promotion.] Withings has always been ahead of the game when it comes to health products and this product is no exception. It is easy to set up and works with the Withings app and even works with other Withings products. I used their wireless blood pressure cuff when it first was released and also their scales and this product works together with those others to deliver data on sleep quality as it relates to health. This device fits under a mattress and you would never even know it is there and provides data on sleep routines and even snoring patterns. Very insightful data and very useful device.

    Review originally posted on bestbuy.com

    Yes, I would recommend this to a friend.

Product Category
Fitness equipment and accessories
Return/Exchange Period
30 days

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