will this fit left or right knee?

It should fit both knees. It is designed for both of them. The sleeve knee braces are where you have to select which knee if I'm not mistaken.

My thigh 19, knee 15.5, calf 15.1. thigh n calf meets m size, but knee is an l. which one should i ordr?

My knee support has a surprising range of adjustability. That said, my choice would be the large; I hope that helps with your decision. My brace is working very well for alpine skiing and has made it possible to continue in a sport I enjoy.

What are the butterfly strap measurements per size? Got a small and outer straps fit, but inner butterfly straps do not.

I’m not sure what you mean by butterfly straps there are 2 straps that you have to put through a little buckle and bring back around so it adheres to the Velcro. It is stretchy.

Does this knee brace have an opening behind the knee?

No only opening is area around knee cap

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DonJoy Performance Bionic Knee Brace – Hinged, Adjustable Patella Support, Lateral / Medial Ligament (ACL, MCL, LCL), Meniscus, Knee Sprains for Soccer, Basketball, Skiing, Hockey, Running, Water

Product ID: 109763928

Details

Age range (description)
Adult
Brand
DonJoy
Size
S
Specific uses for product
Knee Support
Use for
Knee

🎯Adjustable top & bottom stretch webbing for precision fit

💨Perforated neoprene for max breathability & anti-slip

🦾Bilateral polycentric hinges with hyperextension stops

£127.46

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Description

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

QUICK ON QUICK OFF - Innovative wrap-around design lets you slip the brace on or off without removing your shoes—because every second counts.
BREATHE EASY PLAY HARD - Perforated neoprene fabric maximizes airflow, keeping your knee cool and comfortable all game long.
STAY VISIBLE STAY SAFE - Reflective elements enhance your visibility in low-light conditions, perfect for early morning or late evening workouts.
PRECISION FIT ZERO DISTRACTION - Top and bottom stretch webbing closures with TPR pull tabs deliver a customizable, secure fit that stays put.
UNMATCHED STABILITY IN EVERY MOVE - Bilateral polycentric hinges with hyperextension stops protect against knee instability during intense sports.

The DonJoy Performance Bionic Knee Brace combines advanced bilateral polycentric hinges with hyperextension stops and adjustable stretch webbing closures to provide superior knee stability and a precision fit. Crafted from breathable perforated neoprene with anti-migration technology, it ensures comfort and slip-resistance during high-impact sports like soccer, basketball, and skiing. Its wrap-around design allows easy on/off without shoe removal, while reflective accents boost safety in low-light environments.

Specifications

ASIN	B00YBSN130
Age Range Description	Adult
Best Sellers Rank	78,082 in Health & Personal Care ( See Top 100 in Health & Personal Care ) 588 in Knee Braces
Brand Name	DonJoy Performance
Closure Type	Hook, Loop
Colour	Black
Customer Reviews	3.8 3.8 out of 5 stars (142)
Global Trade Identification Number	00888912066396
Included Components	Medical Brace
Item Dimensions	41.1 x 21.3 x 17 centimetres
Manufacturer	DJO Global
Material	Neoprene
Model Number	DP151KB04-BLK-S
Number of Items	1
Part Number	DP151KB04-BLK-S
Product Care Instructions	Hand Wash Only
Size	S
Special Features	Non Slip
Specific Uses For Product	Knee Support
Sport Type	Walking
Target Use Body Part	Knee
UPC	888912066396
Unit Count	1.0 count

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£127.46

Duties & taxes included

In stock

Sold byAmazon UKDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to UK.

Secure transaction

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Fast, free shipping, member pricing & priority support.

Join PRO →

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TrustScore 4.5 | 7,300+ reviews

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