I didn't go home early. First time in a year.
Wore it through a 3-hour budget meeting on day 1. Under a sweater, nobody noticed a thing.
Jessica M. · Office manager, Austin TX✓ Verified buyer
Heat always helped. It just never left the couch.
Purly is a cordless heat + massage belt you wear under your clothes. So day 1 of your period doesn't take the whole day.
- Heats in seconds
- Cordless, up to 8h
- Fits under your clothes
- Belly or back
Get my belt
— $49.90 $99.90100-day comfort guarantee
9 minaverage time to first relief, reported by our customers
Cordless5 heat levels5 massage modesUSB-C chargingBelly or backSilent heat-only mode100-day guarantee
Your period emergency kit
Still microwaving paper towels at work?
- Toe warmers stuck in your waistbandLumpy, and cold again by lunch.
- Paper towels in the office microwaveWarm for ten minutes. If nobody's in line.
- A heating pad plugged into the wallWorks great. As long as you never leave the couch.
- Waiting an hour for the ibuprofenSitting through every wave until it kicks in.
Purly replaces all four. Real heat that stays on, under your clothes, wherever your day goes.
How it works
A heating pad you wear.
Strap it on
Belly or lower back. The soft elastic strap sits flat under a sweater, scrubs or a hoodie.
Pick your heat
It warms up in seconds. Five levels, up to about 140°F, plus five massage modes if you want them.
Get on with your day
No cord, no outlet. One charge lasts up to 8 hours on lower settings. Recharge with USB-C.
The Cycle Comfort Guide
Day 1 doesn't hurt like day 3. Why use the same heat?
5 heat levels × 5 massage modes. That's 25 ways to match your relief to the day you're having.
25heat + massage combinations
Day 1
The worst wave
High heat plus a strong massage, for the cramps that hit in shock waves.
Heat
Massage
Day 2
Still sore
Turn it down one notch. Keep it on through the morning.
Heat
Massage
Day 3
The dull ache
Low, steady heat. Heat-only mode is completely silent.
Heat
Massage
Back cramps
It moved?
Flip the belt around. The heat goes where the pain went.
Heat
Massage
A comfort guide, not a prescription. Start on a low level and go up when you need it.
What researchers found
It's not the heat. It's how long it stays hot.
Researchers didn't test a hot water bottle that goes cold in 20 minutes. They tested heat that stays on for hours. That's what Purly is built to do.
= ibuprofen
In a clinical trial, continuous low heat worked as well as ibuprofen for period cramps.
Akin et al., Obstetrics & Gynecology, 20011.5 h vs 2.8 h
Heat + ibuprofen brought noticeable relief faster than ibuprofen alone.
Akin et al., Obstetrics & Gynecology, 200157 trials
A review of 57 clinical trials and 5,359 women found heat reduced period pain, at 24 hours and over 3 months.
Yuan et al., Frontiers in Medicine, 20251 in 5
Painkillers don't bring enough relief for about 1 in 5 women with period pain.
Yuan et al., Frontiers in Medicine, 2025These studies looked at heat therapy in general, not at Purly specifically. Purly is a comfort device, not a medicine. If your pain is severe, talk to your doctor.
Purly vs. the usual
Everything you've tried. In one belt.
| Purly | Plug-in pad | Hot water bottle | Heat patches | |
|---|---|---|---|---|
| Cordless | ✓ | ✕ | ✓ | ✓ |
| Stays hot for hours | Up to 8h | ✓ | 20 min | ✓ |
| Adjustable heat | 5 levels | ✓ | ✕ | ✕ |
| Massage | 5 modes | ✕ | ✕ | ✕ |
| Wear it under your clothes | ✓ | ✕ | ✕ | ✓ |
| Buy it once | ✓ | ✓ | ✓ | Every cycle |
4.8★★★★★2,184 reviews
“No one at work even noticed.”
Clipped under my scrubs, 12-hour shift
I'm on my feet all day and can't lie down when cramps hit. Level 3, no massage, and I just keep going. Still had battery left at the end of my shift.
Danielle R. · ER nurse, Columbus OH✓ Verified buyer
The hour before the Advil kicks in? Handled.
I take my ibuprofen, strap this on, and the waiting part is actually bearable now. I used to just lie on the bathroom floor.
Priya K. · Grad student, Chicago IL✓ Verified buyer
My 4th heating pad. The first one I can leave the house with.
Three plug-in pads, all great, all stuck to the wall. This one comes with me to the grocery store.
Megan T. · Teacher, Phoenix AZ✓ Verified buyer
She hasn't missed a school day since September
Bought it for my 15-year-old. She wears it under her hoodie and says nobody can tell. Worth every penny.
Alyssa B. · Mom of two, Raleigh NC✓ Verified buyer
Honestly was skeptical
It helps way more than I thought it would. Day 1 I go heat 5 with massage, by day 3 it's just low heat on my back.
Carla V. · Designer, Denver CO✓ Verified buyer
Launch offer
Try it for one cycle. Or three.
$49.90$99.90
Save 50% — launch price- Purly Cramp Melt Belt
- USB-C charging cable
- Cycle Comfort Guide card
- Free returns for 100 days
100
DAYSWear it through 3 full cycles. If it doesn't make your period days easier, send it back within 100 days for a full refund.
DAYSWear it through 3 full cycles. If it doesn't make your period days easier, send it back within 100 days for a full refund.
Questions
Before you ask
How long does the battery last?
Up to 8 hours per charge, depending on your heat and massage settings. Higher heat and massage use more battery. It recharges with any USB-C cable.
Is it noisy? Can I wear it in a meeting?
Heat-only mode is completely silent, and that's the mode most people use at work. The massage is a gentle vibration you can turn on when you're at home or alone.
Does it heat my belly and my back at the same time?
No, one area at a time. Wear the heat pad on your lower belly, or turn the belt around when the cramps move to your back.
Can I use it with ibuprofen or my birth control?
Yes. Many of our customers wear Purly while they wait for their painkiller to kick in. Purly is a comfort device, not a medicine, and it doesn't replace your treatment. If your pain is severe or new, talk to your doctor.
How hot does it get?
Up to about 140°F on level 5. Start on a low level, wear it over a thin layer of clothing, and turn it up only if you need more.
Will it fit me?
The soft elastic strap adjusts to fit most waists, and it lies flat under loose clothing.
What if it doesn't work for me?
Try it for 100 days. If it doesn't make your period days easier, send it back for a full refund. No forms, no questions.