-High density foam construction.
-6" diameter.
-Comes in "full" and "half" options.
Great for stretching, balance training, and strengthening.
-Nerdy guy not included.

If you're serious at all about stretching, your flexibility, or preventing injuries, you should seriosuly consider making the small investment in one of our foam rollers. Popular amongst elite athletes the world over, these foam rollers are incredibly versitile. A great product for stretching the back, hamstrings, quads, calves, and hip flexors.
Foam roller guide can be found here