Versatile and targeted support for a variety of patella tracking issues and moderate support from pain associated with tendonitis Lateral support enhanced by integrated spring steel stays (2 per side) Easy, simple, quick wrap-on design, even goes over Pants Compression and support in a lightweight, flexible design Comfort and range of motion increased with strap-free back. Fits left or right Versatile and targeted support for a variety of patella tracking issues and moderate support from pain associated with tendonitis sported. Lateral support enhanced by integrated spring steel stays (2 per side). easy, simple, quick wrap-on design, even goes over pants. Compression and support in a lightweight, flexible design. Versatile compression level and fit preferences due to over wrap system. Top over wrap manages fit, muscle support and compression. Bottom over wrap isolates and stabilizes patella. Comfort and range of motion increased with strap-free back. Fits left or right.