DJO, Knee Sleeve Reaction X-Small / Small Pull On Sleeve / Hook and Loop Strap Closure 13 to 18-1/2 Inch, 1 EachProduct Description Elastomeric web design helps to reduce pain by dispersing energy across the knee Mesh backing creates a comfortable fit and a breathable solution for relief of anterior knee pain The elastomeric web acts to dynamically stabilize the patella on all sides Dual axis hinges are flexible, creating synergy with the elastomeric web Product Benefits Ingredients Suggestions Special Note Warnings California Proposition 65 WARNING Some