RitFit Tri-Strap Pro Stabilized Design Enhanced Professsional Breathable Neoprene Knee Brace and Support - Helps with Running, Walking, ACL, Meniscus Tear, and Arthritis One size fits all: 13-17 knee circumference with 3 fully adjustable velcro belts accommodate users with different needs. Tri-srtap with open patella stabilizer design helps with ACL, MCL,Tendonitis, Meniscus,Tears. Anti-slip design : double-way anti-slip strips make it stay in place when you use this for running ,swimming, basketball and football tennis and types of multi directional sports. Soft and lightwight material and ergonomic design allow your knee to bend 90 degree without restriction. Our product is backed by our satisfaction guarantee and 5 star customer review. Lifetime guarantee: If you don't feel satisfied about our jump rope, just let us know and we'll refund you in full.