All products on FSAstore.com, the Flexible Spending Account Site, are guaranteed to be FSA Eligible! Provides support for stiff, weak, sore, injured or arthritic knees. Helps to relieve pain and prevent further injury. Gel shield guides patella in natural groove Provides support for rehabilitation for knee injury and sprains Control your fit and level of support with contoured straps Designed to ease around a woman's thigh for smooth fit & comfort High-performance support fits comfortably under clothes One size adjustable product fits most women