I like the density of this foam roller, it wasn't quite as long as I thought it would be but it still works great. This isn't quitw as long as those black styrofoam looking ones you see in the gym but it's about maybe 3-6inches shorter than those. Still works great and I am interested in their smaller size now too for portability.
The GRID 2.0 is twice as long as the GRID to accommodate larger bodies or offer a more stable surface. Use the GRID 2.0 for a self-massage and roll through the tight muscles, knots and kinks that prevent feeling good and moving well.