---
product_id: 8827153
title: "Reaction Compression Support: Knee Brace Undersleeve, Medium"
brand: "donjoy"
price: "NT$2295"
currency: TWD
in_stock: true
reviews_count: 10
category: "Don Joy"
url: https://www.desertcart.tw/products/8827153-reaction-compression-support-knee-brace-undersleeve-medium
store_origin: TW
region: Taiwan
---

# Precision fit with thigh & calf measurements 85% nylon/15% spandex blend Compatible with DonJoy Reaction WEB braces Reaction Compression Support: Knee Brace Undersleeve, Medium

**Brand:** donjoy
**Price:** NT$2295
**Availability:** ✅ In Stock

## Summary

> 🦵 Elevate your knee game with support that moves as fast as you do!

## Quick Answers

- **What is this?** Reaction Compression Support: Knee Brace Undersleeve, Medium by donjoy
- **How much does it cost?** NT$2295 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/8827153-reaction-compression-support-knee-brace-undersleeve-medium)

## Best For

- donjoy enthusiasts

## Why This Product

- Trusted donjoy brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Stay-Put Design:** Flush nubs at the top prevent slipping and itching—no more constant adjustments during your busiest days.
- • **Perfect Fit Guarantee:** Runs small? Simply size up for a tailored fit that hugs your knee and thigh perfectly.
- • **Next-Level Comfort & Support:** Ultra-thin, breathable fabric with targeted compression for all-day wear without irritation.
- • **Extend Your Brace’s Lifespan:** Designed as a replacement undersleeve to protect and prolong the life of your DonJoy Reaction knee brace.
- • **Trusted by Pros & Patients Alike:** Clinically recommended and highly rated for meniscus tear recovery and active lifestyles.

## Overview

The DonJoy Reaction Compression Support Knee Brace Undersleeve is a premium replacement sleeve made from a durable 85% nylon and 15% spandex blend. Engineered for compatibility with DonJoy Reaction WEB braces, it offers a snug, anti-slip fit enhanced by unique flush nubs to prevent irritation and slippage. Ideal for professionals and athletes seeking reliable knee support, it extends the life of your brace while delivering breathable, comfortable compression tailored through precise thigh and calf measurements.

## Description

The DonJoy Reaction Knee Undersleeve replacement is made of 85% nylon/15% spandex. Compatible with the DonJoy Reaction WEB and the DonJoy OA Reaction WEB knee braces. To ensure a proper fit, take the measurement of your thigh and calf, 6 inches above and below your kneecap using a flexible type tape measure. Use the circumference you measure to choose your size. The DonJoy Reaction Undersleeve runs small. Should you measure between sizes, we recommend going up one size for optimum comfort and fit.

Review: EXCELLENT in EVERY WAY! - This sleeve, is exactly like the one given to me with my meniscus tear brace at the surgeon's office. I have been searching everywhere for it. THANK YOU so much. It is the same material, but most importantly, it has these cool flush nubs at the top, that keep it from sticking or becoming itchy. It is the most perfect compression sleeve, and gives a lot of support. I am 180 lbs, 5'8" and got the medium, and it is perfect! Thank you for fast shipping. I'm ordering three more right now!
Review: A Perfect Fit - Perfect Fit! I have very thick thighs (23”) and have never found an under sleeve for my knee brace that actually fit in 3 years. They all want to slip down and I’ve never found a way to make them stay in place. This DonJoy XXL Sleeve (The same brand as my brace btw) is very comfortable, ultra thin, great stretchability and stays up and never slips down. Highly Recommend…

## Features

- The DonJoy Reaction Knee Undersleeve replacement is made of 85% nylon/15% spandex
- Specific Uses For Product: Chafing, Skin Irritation
- Compatible with the DonJoy Reaction WEB and the DonJoy OA Reaction WEB knee braces
- When used, helps extend the life your knee brace

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN  | B00NOW5PH4 |
| Best Sellers Rank | #157,058 in Health & Household ( See Top 100 in Health & Household ) #713 in Knee Braces #5,375 in Sales & Deals |
| Customer Reviews | 4.0 4.0 out of 5 stars (456) |
| Date First Available  | November 18, 2011 |
| Is Discontinued By Manufacturer  | No |
| Item model number  | DJ141KS12-M |
| Manufacturer  | DJO Consumer LLC |
| Product Dimensions  | 9 x 0.25 x 8 inches; 1.6 ounces |

## Product Details

- **Age Range (Description):** Adult
- **Brand:** DonJoy
- **Size:** Medium (Pack of 1)
- **Specific Uses For Product:** Chafing, Skin Irritation
- **Use for:** Knee

## Images

![Reaction Compression Support: Knee Brace Undersleeve, Medium - Image 1](https://m.media-amazon.com/images/I/71z2PNu9D1L.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: where are the size measurment instructions?  it says measure 6 inches above and below knee, but it doesnt have a size chart telling you which ... ?**
A: The size chart is among the product photos. Not super helpful.

**Q: Are these sleeves, size large, black and gray (as pictured) or all black? if black and gray (as pictured) i will order 2.**
A: They are gray and black as pictured.

**Q: My thigh measures 23 1/2 do I need to buy a large or xlarge?**
A: Are you wanting more compression or is it an under brace sleeve? I would go with the large.

**Q: I have a medium/large brace and the sleeve that is included. I need a larger sleeve. What comes with it, medium or large?**
A: I have a large brace and bought an additonal extra large sleeve because the large was small.

## Customer Reviews

### ⭐⭐⭐⭐⭐ EXCELLENT in EVERY WAY!
*by K***A on June 14, 2025*

This sleeve, is exactly like the one given to me with my meniscus tear brace at the surgeon's office. I have been searching everywhere for it. THANK YOU so much. It is the same material, but most importantly, it has these cool flush nubs at the top, that keep it from sticking or becoming itchy. It is the most perfect compression sleeve, and gives a lot of support. I am 180 lbs, 5'8" and got the medium, and it is perfect! Thank you for fast shipping. I'm ordering three more right now!

### ⭐⭐⭐⭐⭐ A Perfect Fit
*by J***R on June 13, 2025*

Perfect Fit! I have very thick thighs (23”) and have never found an under sleeve for my knee brace that actually fit in 3 years. They all want to slip down and I’ve never found a way to make them stay in place. This DonJoy XXL Sleeve (The same brand as my brace btw) is very comfortable, ultra thin, great stretchability and stays up and never slips down. Highly Recommend…

### ⭐ Sizes are currently mislabeled!!
*by R***J on September 1, 2025*

I purchased a Medium, which was great but the elastic ends are a little tight despite my measurements being well within the sizing chart, so I decided to try a Large. I ordered a Large but received what the manufacturer has very clearly marked SMALL. I returned it and asked them to replace it with a LARGE, as that’s what I’d ordered. For a second time they sent a SMALL!! This time I noticed that while the manufacturer’s label is correct, there is a small, separate sticker on the back of the bag (I assume an Amazon inventory sticker) that says “LARGE.” I assume the entire stock is mislabeled in this manner. The sleeve itself is great, but do not order if you need a large because they won’t send you the correct size!

## Frequently Bought Together

- DonJoy Reaction Compression Support: Knee Brace Undersleeve, Medium
- DonJoy Knee Brace Undersleeve, Closed Patella, Medium
- DonJoy Reaction Web Knee Support Brace with Compression Undersleeve: Blue, Medium/Large

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*Product available on Desertcart Taiwan*
*Store origin: TW*
*Last updated: 2026-03-22*