Jeremy, 62 ✓
★★★★★
Support without a big device
“I wasn't ready for a big mobility device. My daughter showed me this, and I barely feel it on my leg. I put it on and can just get on with my day.”
1 / 8
Active Knee BracePowerBoost Springs That Push You Back Up
- Patented PowerBoost springs push back up as your knee straightens
- Easier stairs, chairs, and everyday walking
- Lightweight, fits either leg, wear under clothing
30-Day Money-Back Guarantee
✓ Patented PowerBoost springs✓ FDA registered establishment✓ Lightweight & adjustable✓ 30-Day Money-Back Guarantee
Patented Strength-Training Function
The first knee brace with a built-in, patented strength-training function (WO 2025/017552 A1). PowerBoost springs push back up as your knee straightens—swap springs in under a minute, no tools required.
PowerBoost SpringsPush back up as your knee straightens for active mechanical support.
Yellow & Red SetsStart gentle (yellow), then everyday balanced support (red, preinstalled).
Custom FitAdjustable straps and breathable materials; fits either leg.
Under ClothingLightweight design for stairs, chairs, walking, and daily activity.
Nübrace is an FDA registered establishment. No electronics, charging, or software required.
What Knee Brace Customers Are Saying
Linda M.
★★★★★
Lightweight and simple
“I wanted support without something bulky or electric. This is the kind of simple setup I was looking for.”
Shelby, 59 ✓
★★★★★
I can keep going
“My legs were getting tired so quickly. With Active Knee Brace, I could feel the support when I lifted my leg. Now I feel like I can keep going.”
Janet S.
★★★★☆
More confidence on stairs
“I still do the walking myself, but the added support gives me more confidence.”
Robert C.
★★★★☆
Easy to work into my routine
“No charging and no complicated setup beyond adjusting it. Once I'm moving, it feels natural.”
Paul D.
★★★★☆
Thoughtful mechanical design
“I liked that it uses simple mechanics instead of electronics. It fits into everyday life better than I expected.”
Ready to try it?
Choose Your Knee Brace Pack
✓ 30-Day Money-Back Guarantee on every option · Questions? Office@nubraces.com
Choose your size (measure around mid-patella)
HSA / FSA Eligible
Use your FSA/HSA funds at Nübrace: the Active Knee Brace can be bought with your Flexible Spending Account (FSA) or Health Savings Account (HSA) funds at checkout.
Shipping
Free shipping on orders over $150 (US & Canada). The 2× and 4× sets ship free; the single adds $9.90 shipping.
30-Day Money-Back Guarantee
Feel it in your first steps, or send it back.
Secure checkout
Your 3-step fit, at home
STEP 1
Wrap and alignPlace the brace on either knee. Align the joint hinge with your knee joint and secure the adjustable straps for a custom fit.
STEP 2
Choose your springStart with Yellow (Gentle) for the first days, then switch to Red (Medium, preinstalled) for everyday balanced support. Swap in under a minute—no tools.
STEP 3
Walk and adjustTake a few steps on flat ground, then try a stair or chair. Fine-tune strap tension until it feels secure and comfortable under clothing.
Real people, real steps
Tap a video for sound
Mechanical support, without the machine
Help moving, not a device that takes over the movement. Active Knee Brace is 100% mechanical and low profile, and you walk under your own power.
| Feature | Nübrace | Powered mobility tech |
|---|---|---|
| 100% mechanical | ||
| No battery or charging | ||
| Adjustable assistance | Varies | |
| Worn under clothes | Rarely | |
| HSA/FSA eligible | Varies |
FAQs
What makes the Active Knee Brace different?
It has a built-in, patented strength-training function (WO 2025/017552 A1) with PowerBoost springs that push back up as your knee straightens. Swap springs in under a minute—no tools required.
Does it use a motor or battery?
No. The Active Knee Brace is fully mechanical. No motor, battery, charging, app or software.
Which spring should I start with?
Start with the Yellow PowerBoost Springs (Gentle) for the first days, then switch to the Red PowerBoost Springs (Medium, preinstalled) for everyday, balanced support.
Does it fit either leg?
Yes. It is unisex and fits either leg. Sizes run S (14–16 in), M (16–18.5 in), L (18.5–20.5 in), and XL (20.5–23.5 in) measured around mid-patella.
Can I wear it under clothes?
Yes. The lightweight design is made for a comfortable fit under clothing during daily activities.
Is Nübrace FDA registered?
Nübrace is an FDA registered establishment.
What is the guarantee?
30-Day Money-Back Guarantee and a 2-Year Limited Warranty. Free shipping on orders above $200 in the US and Canada.
Is it HSA / FSA eligible?
Yes. You can use Flexible Spending Account (FSA) or Health Savings Account (HSA) funds at checkout.
How do I get help?
Email Office@nubraces.com and our team will help with sizing, springs, or your order.
Ready to walk easier?
Choose Your Knee Brace Pack
✓ 30-Day Money-Back Guarantee on every option · Questions? Office@nubraces.com
Choose your size (measure around mid-patella)
HSA / FSA Eligible
Use your FSA/HSA funds at Nübrace: the Active Knee Brace can be bought with your Flexible Spending Account (FSA) or Health Savings Account (HSA) funds at checkout.
Shipping
Free shipping on orders over $150 (US & Canada). The 2× and 4× sets ship free; the single adds $9.90 shipping.
30-Day Money-Back Guarantee
Feel it in your first steps, or send it back.
Secure checkout