Max RPM Wrist Wraps It's All About The RPM (Revolutions Per Meter) Maximum Revolutions Maximum Contact Maximum Power How do you generate more power without sacrificing cool? It's simple. Combine cutting edge woven elastic fabric technologies with classic muscle car styling. By infusing the stripes into a completely smooth and uniform surface area, we've eliminated distortion caused by folding, collapsing and pinching. The result is greater elasticity, a truer fit and more stored energy. All lengths feature 2 inch wide military grade Aplix hook & loop that is 30% stronger than Velcro! Plus heavy duty 3/4 inch elastic thumb loops and a 6 month guarantee. Available in 12", 18"(50cm) 24" or 36" lengths