Pro-Tec X-Trac Dual Strap Knee Support Color:N/C OS1st's Compression Zone Technology applies

OS1st's Compression Zone Technology applies varying levels of pressure to seven different zones

offering support for recovery from patellar and quadriceps tendonitis

Non-reflective lenses – reduce glare so you don’t have to squint while running

safe listening at an entry-level price

Pro-Tec X-Trac Dual Strap Knee Support Color:N/C OS1st's Compression Zone Technology appliesThe Pro Tec X Trac Dual Strap Knee Support works to stabilize the patella, improving patellar tracking. This X shaped wrap applies compression above and below knee, offering support for recovery from patellar and quadriceps tendonitis, as well as patellar tracking disorders that may cause chondromalacia and patello femoral pain. Sizing (by circumference measured 1 above the patella): Small 12 14. 5 Medium 14. 5 16. 5 Large 16. 5 19. 5