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 バイオニック膝サポートブレース:ブラック、ミディアム

DonJoy Performance バイオニック膝サポートブレース:ブラック、ミディアム

Product ID: 727809766

Details

サイズ
M
ブランド
DonJoy
対象年齢
大人
材質
ネオプレン
色
ブラック

🔒TPR pull-tab stretch webbing closure for precise fit

🖤Breathable neoprene for max airflow

🦾Dual-direction multi-hinge with hyperextension stop

S$185

Duties & taxes included

In stock

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Description

🖤 Elevate your knee game with pro-grade support that moves as fast as you do!

VISIBILITY MEETS SAFETY - Reflective elements enhance visibility in low-light conditions, so you never miss a beat.
STAY COOL UNDER PRESSURE - High-breathability neoprene fabric maximizes airflow, keeping your knee fresh during intense activity.
CUSTOMIZABLE COMPRESSION FIT - TPR pull-tab stretch webbing closures ensure a tailored, secure fit that moves with you.
EFFORTLESS ON OFF CONVENIENCE - Wrap-around design lets you slip it on or off quickly without removing shoes—perfect for busy pros.
UNMATCHED STABILITY SUPPORT - Dual-direction multi-hinge with hyperextension stop protects against knee instability and ligament injuries.

The DonJoy Performance Bionic Knee Support Brace in black (medium) features a dual-direction multi-hinge with hyperextension stop to stabilize unstable knees. Its breathable neoprene fabric and TPR pull-tab stretch webbing closures provide a customizable, comfortable fit. Designed with a wrap-around style for easy on/off without removing shoes, it also includes reflective elements for enhanced low-light visibility. Ideal for sports like tennis and baseball, this brace offers top-tier protection and comfort for active professionals.

Specifications

ASIN	B00YBSL8MG
Amazon 売れ筋ランキング	ドラッグストア - 241,356位 ( ドラッグストアの売れ筋ランキングを見る ) ひざ用サポーター - 1,404位
GTIN (Global Trade Identification Number)	00888912066402
UPC	888912066402
おすすめ度	4.2 5つ星のうち4.2 (1,523) var
お客様の年齢層	大人
カラー	ブラック
サイズ	M
スポーツタイプ	テニス, 野球
パッケージ内に含まれる商品の数	1
ブランド名	DonJoy Performance
メーカー名	DJO Global
メーカー型番	DP151KB04-BLK-M
ユニット数	1.00 個
同梱商品	医療ブレース
品番・型番	DP151KB04-BLK-M
商品の取り扱い説明書	手洗いのみ
商品の重量	0.45 キログラム
商品本体サイズ	36.8 x 14.7 x 6.9 cm
留め具の種類	フックとループ。
素材	ネオプレン

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