1
Wrap and fasten
Place the wrap around your knee and press the wide velcro strap closed with one hand. No buckles or clips.
Cordless heated knee massager
Soothing warmth for stiff, achy knees.
JointJoy wraps your knee in steady, gentle heat, with soft vibration if you'd like it. No microwave, no kettle, no trailing wire. The strap fastens with one hand, the display is big and clear, and it switches itself off after 20 minutes.
£49.99Free UK delivery · 30-day money-back guarantee
Free delivery in 1–2 weeks
30 days to change your mind
Secure checkout
3Heat levels
3Vibration modes
20 minAuto switch-off
30 daysMoney-back guarantee
Try the settings
Choose your warmth. Add gentle vibration if you like.
Pick a heat level and a vibration setting below to see how JointJoy works. Each session switches off on its own after 20 minutes, so there's no timer to watch.
Switched off
Switches itself off after 20 minutes
This is an illustration. On the real product you change settings with two large buttons, and the instructions are in the box.
Why people switch
Like a hot water bottle that stays warm and stays put
A hot water bottle slides off and goes cold. A wheat bag needs the microwave. JointJoy straps round your knee and keeps a steady, even warmth for the whole session.
| Hot water bottle | Wheat bag | JointJoy | |
|---|---|---|---|
| Stays in place on your knee | No | No | Yes |
| Stays warm the whole time | Cools down | Cools down | Steady heat |
| No kettle or microwave | Kettle | Microwave | Rechargeable |
| Choose how warm | No | No | 3 levels |
| Gentle vibration | No | No | 3 modes |
| Switches itself off | No | No | After 20 min |
How it works
Simple as 1, 2, 3
2
Pick your settings
Choose a heat level and, if you like, a vibration mode. The big display shows what you've chosen.
3
Sit back and relax
Enjoy up to 20 minutes of soothing warmth. JointJoy switches off on its own when the time's up.
Why JointJoy
Designed to be easy
Goes on with one hand
Wrap it round and press the wide velcro strap closed. No fiddly fastenings.
Big, clear display
Large numbers and simple buttons, so you can always see which setting you're on.
No wires, no microwave
Charge it with USB-C like a phone, then use it in your armchair, in bed or in the garden.
Switches itself off
Every session ends automatically after 20 minutes. Nothing to remember.
Heat, vibration or both
Warmth on its own for chilly mornings, or add gentle vibration to unwind in the evening.
Ready to give
A thoughtful present for a parent or grandparent, delivered free to their door.
Everyday comfort
A little warmth, whenever you want it
A thoughtful gift
A cosy present for Mum, Dad or Grandparents
Stuck for a present for a parent who "doesn't need anything"? If they like a hot water bottle on their knee in the evening, they'll love JointJoy. It's simple to use from day one, and it can go straight to their door.
ChristmasOrder by 4 December
Mothering Sunday (7 March)Order by 19 February
Birthdays2 weeks before
What's in the box
Everything you need, ready to charge
- JointJoy heated knee wrap with control unit
- USB-C charging cable (works with any USB phone plug)
- Instruction leaflet
| Heat levels | 3 (low, medium, high) |
|---|---|
| Vibration | 3 modes, or heat on its own |
| Session length | Switches off after 20 minutes |
| Battery | Rechargeable, up to 3 hours per charge |
| Charging | USB-C, about 2 hours for a full charge |
| Fit | Soft neoprene wrap with an adjustable velcro strap |
Our promise
Try it for 30 days. Love it, or get your money back.
JointJoy is a new, small business, so we don't have customer reviews to show you yet, and we won't make any up. Instead, here's a straightforward promise: if JointJoy isn't right for you, contact us within 30 days of delivery and we'll refund you in full.
A real person replies
Email hello@jointjoy.co.uk with any question, before or after you order. We reply within one working day.
Tracked delivery
Free UK delivery in 1–2 weeks. You'll get a tracking number by email as soon as your order ships.
Secure checkout
Payments are handled by Stripe. We never see or store your card details.
Before you use it
JointJoy is a comfort product, not a medical device. Please check with your GP or pharmacist first if you:
- have diabetes, poor circulation or reduced feeling in your legs
- have a pacemaker or other implanted device
- are pregnant, or have been told to avoid heat
Don't use it on broken, swollen or numb skin, or while asleep. Start on the lowest setting, and always follow the instructions in the box.
Questions & answers
Everything you might want to know
How long is each session?
Up to 20 minutes. JointJoy then switches off automatically, and you can stop it sooner at any time.
How long does the battery last?
Up to 3 hours on a full charge, which is enough for several sessions. A full charge takes about 2 hours with the included USB-C cable.
Will it fit my knee?
The soft wrap has a long velcro strap that adjusts easily and fastens with one hand, so it fits most adult knees comfortably. If you're unsure, email us and we'll help.
What does it feel like?
A gentle, even warmth, like a hot water bottle that stays warm, with optional soft vibration. You choose how warm and how strong. Start on the lowest setting and work up.
Is there anyone who shouldn't use it?
Please check with your GP or pharmacist first if you have diabetes, poor circulation, reduced feeling in your legs, a pacemaker or other implant, are pregnant, or have been advised not to use heat. Don't use it on broken, swollen or numb skin, or while asleep.
What is your returns policy?
You have 30 days from delivery to change your mind, which is longer than the 14 days the law requires. Email hello@jointjoy.co.uk and we'll explain how to send it back. Full details are on our returns page.
How long does delivery take?
Delivery is free to UK addresses and takes 1–2 weeks. We'll email you a tracking number as soon as your order ships. Full details are on our delivery page.
Can I send it as a gift?
Yes. Just enter their name and address as the delivery address at checkout. See our gift buying guide for Christmas and Mothering Sunday order dates.
How do I pay?
Click any "Order" button to go to our secure checkout, run by Stripe. You can pay by debit or credit card, and Apple Pay or Google Pay if your device supports them.
Still have a question? Ask our assistant, any time of day.
Order today
Cosy knees, all winter long
£49.99
- Free UK delivery in 1–2 weeks, with tracking
- 30-day money-back guarantee
- Questions answered by a real person
Secure checkout by Stripe. Pay by card, Apple Pay or Google Pay.