Relieve Knee Pain, Stiffness, and Swelling in 20 Minutes
- Infrared Heat. Releases the muscle clamped around your knee to ease the stiffness.
- Massage. Moves the fluid trapped inside the joint to bring the swelling down.
- Red Light Therapy. Calms the inflammation to stop the pain that keeps coming back.
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How can we help?
How can we help?
Knee pain after surgery is not just physical. It changes how you move through your day, whether you feel steady standing up from a chair, whether you can keep up with your grandkids without paying for it the next morning.
We built Simpli for people who did everything right, physical therapy, ice, the exercises, and are still waking up stiff and swollen months or years later.
Simpli combines deep infrared heat, targeted massage, and red light therapy to release the muscle clamping down around your knee. Once that muscle lets go, the trapped fluid inside the joint can finally move, and the inflammation underneath starts to calm.
Directions for Use
Directions for Use
Getting Started
- Wrap the massager around your knee and secure the velcro straps until snug.
- Press and hold the power button to turn on.
- The device starts automatically on default: vibration on, low heat, red light on.
Adjusting Your Settings
Use the top panel buttons to adjust heat level (3 settings up to 136°F). Switch between 3 vibration modes to find your comfort level. Toggle red light therapy on or off as needed.
During Your Session
Relax and let the device work for the full session. The 10-minute auto shutoff will turn the device off automatically for your safety. For best results use daily, ideally in the evening when muscles are most relaxed.
Shipping & Delivery
Shipping & Delivery
We process all orders within 1 to 2 business days. Estimated delivery is 5 to 10 business days within the United States. You will receive a tracking number by email once your order ships. All orders include free shipping!
Real People. Real Relief.
Our Happy Customers Love It :)
Got my knee replaced in April. Nobody tells you how stiff it stays even after everything "heals." I was still shuffling to the bathroom in the mornings four months later. My niece is a nurse and she's the one who told me heat and vibration actually helps with that post surgery stiffness, so I gave this a shot. I use it right when I wake up now. Big difference honestly, my knee doesn't fight me for the first ten minutes of the day anymore.
Swelling. That's all I dealt with after my knee surgery this past winter. Every single evening my knee would blow up like a balloon. Doc said the surgery itself went fine so there wasn't much else he could do for me. My wife ordered two of these for me, didn't even ask, just showed up on the front steps one day, one for each knee since I'm about due for the other one too. Been using it about a month and the swelling at night is nowhere near what it was. I was able to get down and play with my grandkids on the floor last weekend, first time since the surgery. Thank you!
One year post op and my knee still locks up if I sit too long, car rides especially. I figured that was just my new normal. Started using this thing before bed, nothing fancy about it, just heat and a little vibration. A couple weeks in I wasn't limping to the coffee maker anymore. It's just part of my routine now, watch TV, use the massager, go to bed.
Backed by Real Clinical Understanding
Reviewed for how it addresses post-surgical stiffness.
After knee surgery, the muscles surrounding the new joint tend to clamp down as a protective response. This is a normal part of healing, but for many people that tension never fully releases on its own, even months or years later. It's a big part of why a knee can look "successful" on a scan and still feel stiff, swollen, or limited in day-to-day movement.
Heat works on that first layer. Warmth encourages the muscle around the joint to relax and loosen, easing the guarding response that's been holding the area tight.
Vibration and massage address the second layer. During healing, fluid can build up and stay trapped in and around the joint. Gentle mechanical movement helps encourage that fluid to keep moving instead of pooling.
Red light targets the tissue itself, which often stays inflamed long after the surgical site has technically closed and healed. Calming that inflammation is a separate issue from the joint replacement or repair itself, it's the layer of soft tissue around it that continues to cause discomfort.
Together, these three elements are designed to work on the parts of post-surgical recovery that a scan alone doesn't capture.
Everything You're Wondering Before You Try It
Real answers. No fluff.
Why Simpli Is Different
Not all knee massagers are the same.
What's Actually Happening Inside Your Knee
Three therapies. One device. Working together.
Releasing The Muscular Tension
Heating pads only warm the surface of your skin. Simpli's infrared heat reaches 136°F, penetrating deep into the locked muscles and soft tissue surrounding your knee. This deep heat dilates blood vessels to release the tension that has been compressing your joint.
Breaking The Compression Cycle
Heat softens the tension, but targeted vibration disrupts it. The 3 vibration modes work through layers of tight, guarding muscles to release the compression around your knee. As the tension eases, your joint gains the space needed for natural synovial fluid to circulate again.
Calming Deep Inflammation
Red light therapy at the right wavelength penetrates past the surface and stimulates cellular repair at the source of inflammation. Not on the surface. Not decorative. Inside the joint where the damage actually lives.
How It Works
Three steps. Thirty seconds. That's it.
Strap It On
Wrap the Simpli massager around your knee and secure the velcro straps until snug. It fits most knee sizes and takes about 10 seconds to put on.
Turn It On
Press and hold the power button. It starts automatically on the default setting with vibration on, low heat, red light. Use the top panel to adjust your heat level and vibration mode to your comfort.
Sit Back and Let It Work
Relax, watch TV, read, whatever you like. The device runs for 10 minutes and shuts off automatically. One session daily is enough for most people. Fully cordless with 2 plus hours of battery life.
The only question is when?
Your knees are not going to fix themselves. Every day you wait is another morning waking up stiff, another activity you skip, another pill you did not want to take. You already know something has to change.
Get Your Knees BackOne-time payment. Your Relief Is Waiting.