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The DualWave BeltThe ScienceFor endometriosisDrug-free reliefOur Promise

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DualWave Relief BeltDualWave Relief Belt
DualWave Relief Belt
Sale priceFrom £59.99
(4.4)

The first email is the most useful.

Get the 4-minute primer on the prostaglandin biology behind period cramps, plus the 2018 Nature meta-analysis that explains why heating pads only fight half the problem.We email roughly once per cycle. No discount-spam, no daily nudges. The first one teaches you something useful about your own body.

By submitting your email, you agree to receive emails from peryode roughly once per cycle. Unsubscribe any time with one click. We never share your email.
DualWave Relief Belt
Drug-free · Wearable

The wearable built for the way cramps actually work.

Continuous therapeutic heat plus calibrated vibration. Two physiological angles, one belt, no pills.

The 60-Day Relief Promise
Two cycles. One email if it doesn't work. Refund in 48 hours, no return shipping. See how it works.
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Free UK shipping Orders £69+
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60-day refund One email
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No subscription One-time
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UKCA · CE Certified
Why this works when nothing else has

For the woman who's tried everything else.

91s
Therapeutic temperature in 91 seconds.
PTC ceramic warms faster than your kettle. Most users feel relief before they finish putting it on.
5h 07m
Battery that lasts a full Day One.
Tested runtime on heat-only mode at 38°C. Charges back to full in ~2 hours via USB-C.
4mm
Discreet under any clothing.
Wearable to job interviews, weddings, presentations. Reviewers consistently say "nobody noticed."
60d
One email if it doesn't work.
No forms, no photos, no return shipping. Refund processed within 48 hours.
How it actually works

Period cramps aren't one problem.
That's why one fix doesn't solve them.

Prostaglandin F2-alpha forces the uterus to contract and constricts the vessels feeding oxygen to the muscle. Heating pads fight one. Ibuprofen fights the other. The DualWave belt addresses both.

ThermoWave — heat that holds at therapeutic range.

Continuous 38–45°C via PTC ceramic. The temperature reopens the constricted vessels, restoring oxygen flow to the uterine muscle. Self-regulating — no overheating, no cool-downs at hour two like your old heating pad.

NeuroWave — vibration that closes the pain gate.

Calibrated vibration engages the gate-control mechanism in the spinal cord, dampening the pain signal before it reaches the brain. Three intensity levels, two pulse patterns — for the days when heat alone isn't enough.

Heat reopens the vessels.
Vibration closes the gate. Together.

A heating pad fights the muscle. Ibuprofen blocks the chemical. Neither restores blood flow. peryode addresses the muscle, the vessel, and the nerve gate in a single wearable. That's the difference reviewers describe as "finally something that works on the days nothing usually does."

Three steps

From box to relief in under twelve minutes.

i
Charge for two hours.
USB-C into any phone charger. Single charge runs 5h 07m on heat mode. About a full Day One.
ii
Wrap, fasten, click on.
Adjustable strap fits 24–46 inch waists. 4mm profile wears flat under any shirt or dress.
iii
38°C in ninety-one seconds.
Step up to 45°C. Add NeuroWave vibration on hard days. Walk around. Forget you have it on.
What arrives in the box

Three ways to start. Pick yours.

Every kit nests in molded recycled paper pulp. No plastic, no air-filled wasted space, no marketing leaflets.

Starter — DualWave Relief Belt
Starter
£59.99
  • DualWave Relief Belt
  • Braided USB-C charging cable
Most popular
Relief Kit — Belt + Premium Carrying Case
Relief Kit
£74.99
  • DualWave Relief Belt
  • Braided USB-C charging cable
  • Premium Carrying Case (travel-ready)
Best value
Complete Protocol — Belt + Carrying Case + Eye Heating Massager
Complete Protocol
£94.99
  • DualWave Relief Belt
  • Braided USB-C charging cable
  • Premium Carrying Case
  • Eye Heating Massager (for the headache that comes with it)
Versus everything you've tried

Why the alternatives fight half the battle.

Heating Pad Heat Patches Ibuprofen TENS Device peryode
Holds 38–45°C continuous — ~30 min N/A No heat 5h 07m
Restores blood flow Partial Partial — — ✓
Dampens pain signal — — Indirect ✓ ✓
Wearable to work — ✓ N/A ✓ ✓
Side effects None Skin irritation GI / kidney load None None
Cost over 2 years £25 £190 £80 + risk £119+ £74.99 once
Founder of peryode
A note from the founder

I built peryode because nothing on the shelf actually worked for me.

I tried the heating pad. The patches. More ibuprofen than I should have, for too many years. The popular wearable that stopped working after six weeks while the company stopped responding to my emails.

The science showed me what was happening. Period cramps aren't just muscle contractions. Prostaglandin F2-alpha forces uterine hypercontraction and constricts the vessels feeding oxygen to the muscle. Nothing I owned addressed both at once.

So I worked with engineers and clinical advisors to build the wearable that did. Continuous heat at therapeutic range. Calibrated vibration that closes the gate on the pain signal at the spinal cord. Two mechanisms. One belt. Built once, kept for years.

We don't take subscriptions. We don't lock you into refills. If it doesn't work for you, one email gets your money back in 48 hours. No return shipping. We mean it because the women who came before you were owed it.

Margot Ellis
Founder · peryode
The 60-Day Relief Promise

Sixty days. One email.
We mean it.

Test it for two full cycles. If it doesn't work for you, the next steps belong to you. No fine print, no return shipping, no follow-up calls.

i
One email.
No forms, no questionnaires, no "please give it one more month." Reply to your order confirmation or write hello@peryode.com.
ii
48-hour refund.
Money back to the original payment method within 48 business hours. No "please allow 5–10 business days."
iii
No return shipping.
Keep the belt. Donate it, gift it, or recycle it. We don't pay you to mail back a used wearable.
Engineered specifications

The technical receipts.

Heat technology
PTC ceramic, self-regulating
Therapeutic range
38–45°C (100–113°F), continuous
Time to therapeutic temp
91 seconds from cold start
Battery runtime
5h 07m heat-only · ~3h 30m heat + vibration
Vibration modes
3 intensity levels · 2 pulse patterns (continuous + wave)
Charging
USB-C · ~2 hours full charge · Universal phone charger compatible
Profile
4mm thick · adjustable strap for 24–46 inch waist
Battery
1500mAh · BMS protection circuit · UN38.3 certified for air travel
Compliance
UKCA · CE · RoHS
Materials
Medical-grade silicone, ABS housing, nylon adjustable strap
Care
Wipe clean with damp cloth · Do not submerge · Store dry
Warranty
2-year limited warranty · 60-day full refund

Will it fit?

Adjustable strap, no add-ons needed. If you're outside this range, email us before ordering.

24"
46"
Honest answers, upfront

Questions women have actually asked us.

Will this work if I've tried four other things?
Probably the most asked question we get. The honest answer: continuous heat at 38–45°C is the therapeutic range used in clinical heat therapy protocols. If your heating pad helped a little, this is the version that doesn't quit at hour two and stays at the right temperature. Gate-control vibration adds a second mechanism your heating pad doesn't have. 60 days risk-free — if it doesn't work for you, full refund in 48 hours.
Is it just a glorified heating pad?
Fair question. A heating pad doesn't hold a calibrated temperature, doesn't stay on you while you walk around, doesn't include vibration. The DualWave Relief Belt does all three because each fixes a different part of the problem. Heating pad fights the muscle. peryode fights the muscle, the blood flow, and the pain signal.
I have endometriosis. Will this help?
Many users with endo report going from "nothing touches this" to "I can function on Day One." But we need to be straight: this is not a cure for endometriosis. See your doctor for that. What it is: a tool that addresses the muscular and vascular components of cramps without adding pills or hormones.
£74.99 feels expensive. Is it worth it?
Compared to what? ThermaCare patches: ~£96/year. Nine days of lost productivity per year (UK median wage): £600+. The math says this pays for itself in six months versus patches alone. Health Cash Plan eligible on most plans (check yours) — qualifies as a medical wellbeing expense. Plus the 60-day refund. The risk is on us, not you.
How discreet is it really?
4mm thick. Soft blush silicone. No logos. Wear it under a shirt, a dress, a blazer. Job interviews, flights, weddings, presentations. Reviewers consistently say "nobody noticed." If you can wear a thin belt under your clothes, you can wear this.
What if I have an IUD?
Heat and vibration are external, non-invasive, non-chemical. They don't interact with hormonal IUDs (Mirena, Kyleena, Skyla) or copper IUDs (Paragard). Many of our reviewers got it specifically because IUDs gave them worse cramps and they wanted drug-free relief. Always confirm with your doctor if you have specific concerns.
I'm postpartum. Is it safe?
It's drug-free, doesn't enter the milk, doesn't affect baby. Wait until your OB-GYN clears you for postpartum activity (typically 6 weeks post-vaginal delivery, longer post-C-section). After clearance, many postpartum users find it helpful for cramps that returned after their cycle came back.
How long does the battery actually last?
5 hours and 7 minutes on heat-only mode (tested at 38°C ambient). Heat plus vibration: about 3.5 hours. Most users get a full Day One with one charge. USB-C charges to full in roughly 2 hours from any phone charger.
What size do I need?
Adjustable strap fits 24–46 inch waists with no add-ons. If you're outside that range, email us before ordering — we'll tell you straight if it'll fit.
Can I use it while pregnant?
No. Heat applied directly to the abdomen during pregnancy is not recommended. Talk to your OB. We're not the right tool here. Save it for after your cycle returns.
How does the 60-Day Relief Promise actually work?
Email us within 60 days of receiving the belt. One email. No forms, no photos, no "please give it one more month." We process the refund within 48 hours. You don't ship the belt back. Keep it, donate it, gift it. We mean it.
How is this different from a TENS device?
Different mechanism. TENS sends electrical pulses through the skin to interrupt the nerve signal. Heat reopens the constricted blood vessels feeding the muscle — a vascular fix, not a nerve one. peryode includes calibrated vibration too (which engages the same gate-control pathway TENS does), so you get both effects in one wearable instead of choosing between them.
When does it ship?
Royal Mail Tracked, 3–5 working days across the United Kingdom. Free on orders over £69. Tracked next-day available at checkout for £6.95.

Your pain is real.
The biology is real.
Now there's a wearable built for the way it works.

Free UK shipping over £69. 60-Day Relief Promise. No subscription required.

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Most popular: Relief Kit · £74.99

From verified buyers

Real cycles. Real reviews.

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Free above £69 · 3–5 working days across the UK

60-day refund

One email · Keep the belt · No return shipping

hello@peryode.com

Real humans, 48-hour response · Mon–Fri UK hours

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