Knee pain relief in 15 minutes. Cold or warm.
One gel compression sleeve. Freeze it for swelling, warm it for stiffness, no mess and no leaks. Used on more than 23,000 knees.
The Cocoon Knee Flex Pro
The only sleeve you need for knee pain. Cold therapy, heat therapy and 360 degree compression in one, and it fits elbows, calves and ankles too.
- Freezer or microwave, ready in minutes
- Grip lining, so it stays put while you move or sleep
- Reusable gel, no refills, no drips, no cords
Built for every kind of knee pain.
Arthritis, an old injury, a knee that complains after every run. Cocoon is drug-free, non-surgical relief you can use every day at home, and it works the same way on elbows, calves and ankles.
Arthritis
Stiff, achy joints that are worst after rest. Warm it for the morning, cold for flare-ups.
Post-run soreness
Aching knees after running, walking or stairs. Cold straight after, warm the next morning.
Knee bursitis
Swelling and tenderness over the kneecap. Cold to bring the swelling down.
Patella tendonitis
Pain below the kneecap that builds with activity. Cold after, warm before.
Torn meniscus and ACL
Swelling, catching or instability inside the joint. Cold for swelling, compression for support.
Tennis elbow
The same sleeve on the elbow. Cold after play, warm before.
“I'm 79 with bad knees and the cooling sensation I get helps tremendously.”
“Provides great short term relief for post knee replacement surgery.”
“Since I've been using my Cocoon the swelling on my left leg is getting better.”
Percentages from Cocoons' observational customer study. Cocoon is a comfort and recovery product, not a medical treatment. Talk to your doctor about any injury or ongoing joint pain.
Find your pain on the knee mapOne sleeve. Two therapies.
Keep it in the freezer or warm it in the microwave. Same sleeve, same fit.
Cold for swelling
For new injuries and flare-ups: sharp pain, a swollen knee, soreness after a run or a workout. Cold slows nerve activity, which dulls pain, and brings swelling down.
Heat for stiffness
For long-running pain: dull aches, stiff joints and tight muscles, especially first thing in the morning. Heat loosens the muscles around the knee and improves circulation.
How to use it.
Real knees. Real customers.
Photos sent in by people wearing their Cocoon at home, at the gym and on the grass.
Trusted on more than 23,000 knees.
Rated 4.7 out of 5 across 8,200 reviews.
“These sleeves are a total game changer. I wore them during a long run and felt incredible support without any discomfort.”
“I've been using the Cocoon Knee Flex Pro for a week and the swelling in my knees has significantly reduced. Absolutely worth it.”
“Super soft on the skin, easy to wear, and delivers quick pain relief after workouts. This is my go-to recovery sleeve now.”
“Less stiffness after just a few uses, and they stay in place perfectly.”
“Never going back to ice packs. If you're thinking about buying it, just do it.”
What an ice pack cannot do.
Ice packs slide off and drip. Heating pads need a socket. Cocoon does both jobs, holds the whole knee, and goes wherever you do.
Try us risk free.
Free shipping
Free shipping on all orders over $50.
90-day trial
Try it for 90 days. Not in love? Full refund.
Easy returns
A simple return and exchange process. Email support@mycocoons.com and we will sort it.
Good questions. Clear answers.
People use Knee Flex Pro for arthritis, knee bursitis, patella tendonitis, a torn meniscus, ACL injuries, fractures and general joint discomfort. You can also wear it on elbows, calves, thighs and ankles. Just pick the right size for the body part.
Yes. The outer fabric is a soft, breathable recycled performance fibre that is antibacterial, so it is comfortable overnight.
Yes. Wear it during workouts and runs, while shopping, or around the house.
No. A grip pad lines the whole inside of the sleeve and holds it in place however hard you move.
Lay it flat and let it air dry. The gel inside is antibacterial, odour-free and non-toxic.
Email support@mycocoons.com within 90 days and we will send a replacement or arrange a refund, no questions asked.
Wear it for 90 days. Then decide.
If it is not helping, email support@mycocoons.com and we will replace it or refund you.
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Learn more about knee pain.
Plain guidance on knee pain, recovery and when to use heat or cold.