Yes4All Combo Accupoint Foam Roller High Density Pro Exercise & Fitness for Deep Tissue Massage Therapy Sports Medicine 13x5 Features an Accupoint Roller and a High Density Foam Roller Accupoint Roller: only 13 Enhance balance, pilates core abdominal, back stabilization, body awareness, muscle re-education, flexibility, dynamic strength Foam Roller: measured 6-inch round, 12-inch long, high density, heat sealed 30% heavier & firmer than the ones from the same class