The Grid Foam Roller Color:Black The midsole is made with

The midsole is made with bio-attributed Zero-Gravity foam

Back lining: 72% polyester/28% spandex

Lining: 90% polyester/10% spandex

The 990v6 for kids brings big impact to small feet

The Grid Foam Roller Color:Black The midsole is made withThe GRID Foam Roller, the original hollow core roller, features a patented multi density foam surface that delivers firm compression like a sports massage while channeling blood and oxygen needed to repair muscles. The GRID Foam Roller is the 'go to' roller to release muscle pain and tightness, improve mobility, increase circulation, and is recommended by sports doctors, chiropractors, and physical therapists. Three dimensional surface allows tissue