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The Original Heat Pack

Regular price $60.00 CAD
Regular price Sale price $60.00 CAD
Sale Sold out
Shipping calculated at checkout.

Meet the world's first beeswax heat pack, designed specifically for period and pelvic pain relief. The Original Heat Pack melts and moulds to your body, bringing heat where you need it most. Whether on the couch, walking the dog, or getting things done at the office or around the house, this heat pack is with you 100% of the way to sooth your cramps and help you feel better. 


  • Soft, discreet, & wearable
  • Easy to use: Just pop it in the microwave, or in boiling water
  • Long-lasting, reusable, sustainably made in Ontario
  • Fits perfectly on lower abdomen & back where you need it most
  • Moulds to the body for deep long lasting pain relief
  • Patented design and manufacturing technology for unbeatable heat

Use it on its own, or with the Keep it Brief for natural, on-the-go relief! We make our products from sustainably sourced materials. In fact, our heat pack is 80% biodegradable! We have minimized the use of plastics and instead use medical-grade silicone rubber with a strength reinforcing nylon mesh, making it durable and safe to use. The heat pack is packed with beeswax and organic oils for unparalleled soothing pain relief. We know you're going to love it - we guarantee it!

Q + A

How do you heat the Original Heat Pack?

You can heat the Original Heat Pack in the oven, with boiling water or in the microwave! 

You know it's ready to use when the beeswax turns to liquid and it's cool enough to comfortably touch.

Where are your products made?

We’re proud to be 100% made in Canada! 

We (Charlie) make our heat packs by hand in Toronto, ON. 

Our underwear manufactured in Hamilton, ON. 

How long does the heat last for?

This depends a little on how well the inside of the heat pack is melted!

Fully melted and worn against the body, the heat pack typically hold heat for +/- 30min. 

Read here for more info!

What materials do you use?

Our heat packs are made with beeswax and medical grade silicone. 

Our underwear is made with a super soft renewable bamboo, spandex, cotton blend. 

Our packaging is 100% reusable or recyclable. 

What is your satisfaction guarantee?

We know you'll love the beeswax heat! We guarantee you'll be satisfied with your heat pack or you can return it within 30 days, no questions asked!

  • No More Bulk

    We've compressed the heat of the classic hot water bottle to fit in your pants.

  • Made to Move

    Disappears on your body for on the go heat. So comfy and discreet you'll forget you're wearing it!

  • Infrared Heat for Pain Relief

    Take your best shot! Completely invisible, unless you have a thermal imaging camera - then you'll see it glow! Go about your day - pain relieved.

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Try beeswax heat risk free.

We know you'll love your new Undu Original Heat Pack so much, you'll want to keep it. But if not, no worries! We offer a 30 day return policy on all heat packs. Give it a try!