Its twice as firm as the original GRID with a three-dimensional surface that allows tissue to aerate while you roll

Edge curve down for comfortable seating

back pain and impact related injuries such as Achilles tendonitis

For effective relief from:

Work out the kinks in hard to reach areas like the hips and shoulders

Solinco Hyper-G 18 1.15 656' Reel Type_Shoe Care Its twice as firm asSolinco Hyper G 18 1. 15 tennis string is designed to offer excellent playability and control. Youll generate intense power and spin with the addition of great bite. This string uses a newly developed chemical formula in combination with high powered polyester monofilament fiber. Co Polyester string. Shaped to generate maximum power and control.