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Men’s Smart Underwear 8 Pack


$299  $399  + Free Shipping to the US & Canada



Boxer breifBoxer breifBriefBrief
2 black, 2 grey, 2 navy and 2 SKIIN Turquoise2 black, 2 grey, 2 navy and 2 SKIIN Turquoise4 black and 4 grey4 black and 4 grey4 navy and 4 SKIIN Turquoise.4 navy and 4 SKIIN Turquoise.
Extra smallExtra smallSmallSmallMediumMediumLargeLargeExtra largeExtra largeDouble extra largeDouble extra large

*Credit card charged when order ships.


Size Guide

SizeWaist in inchesWaist in centimeters
  • Measure waist 2 inches (5 cm) below natural waist where the waistband of trousers normally sits on the body
  • Measure hips around fullest part of the hips and the bottom
  • If in between sizes, we recommend choosing the smaller size

Colour Guide


  • Classic pack: Includes black and grey styles
  • Mix pack: Includes a mix of all colours – black, grey, navy and SKIIN Turquoise
  • Bold pack: Includes our brightest colours – navy and SKIIN Turquoise


Can I put my underwear in the washing machine?
Yes. SKIIN underwear can be machine washed. Just make sure to remove the module from the waistband beforehand to ensure it will continue to function as expected.

How long does the battery last?
With a multi-day battery life of up to 6 days, SKIIN tracks your day and night – never missing a beat.

What are some safeguards that can be implemented to protect the user’s data and privacy?
To protect your privacy, all biometric data is anonymized – it is stored according to a user’s numeric user ID, and is stored privately and securely on a separate server from your profile/identity. When a 3rd party app you’ve downloaded wishes to access your biometric data, we use a technology called OAuth 2.0. Using OAuth means you never share your login credentials (i.e. email and password) with a 3rd party app, and instead simply grant them limited access to small subset of your biometric data. As the owner of your own data, you may revoke this access at any time.

Is it safe to have electronics in my underwear?
Yes. We use a wireless communication technology called Bluetooth low energy. It emits energy approximately 1000 times lower than your cell phone or a typical wi-fi router. Plus, SKIIN underwear & bras have EMI Shielding to protect your assets from radiation.

Do you have an API?
We are in the process of developing our API and will make it available to developers in the very near future.

How accurate is your data?
The data that we monitor and collect is comparable to some of the best medical grade testing and sensing devices out there. For example, we are collecting high-quality ECG, similar to ones used by doctors. Machine learning algorithms allow us to interpret and use this data in unprecedented ways.

Can I return my SKIIN product if I don’t like it?
It is very important to us that you are completely satisfied with your purchase. If you need to return or exchange an item, we will gladly accept unused, unwashed, unaltered merchandise in saleable condition with original tags attached for a full refund or exchange within 30 days of the invoice date.
Due to the intimate nature and hygiene standards of underwear & bras, it is not possible to return worn items, unless they are deemed to be defective. We reserve the right to refuse returns for items that do not meet hygiene and health regulations or are no longer sellable for other reasons.