Skin-on-Frame: Interesting SOF Engineering *LINK* *Pic*
http://lh4.ggpht.com/_dkNHd9NGTLY/SgYvG55CmuI/AAAAAAAAJKY/frEgLGCaMug/s640/P5090003.JPG
Pics of a very unique SOF. I tried it but it was way too tight for me. I got toe cramps in both feet at the same time, while rolling.