Patella Boosters(40x) to Increase Knee Strength, Adjustable Length for Stairs, Sports

Features:- When you pick up, your knee strength can be increased by 40KG.- It can be worn inside and outside, and the length can be adjusted.- Breathable non-slip fabric with venting holes, suitable for climbing stairs, climbing, sports, etc.- With the booster, when the knee is folded, there will be a certain angle to start the elastic force.- Adjustable length, easy to disassemble stickers. Special manufacturing spring, strong rebound force.Specifications:Material: PC+Spring+Diving clothPackage included:1 x Pair of Patella BoostersNotes:1. Manual measuring, please allow 1 ~ 3mm error,thank you.2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the picture.