Power Systems Myo-Roller, Textured Roller Massage Therapy Aid for Recovery, Myofascial Release and Spinal Alignment, 6 x 6 Inches, Blue Marble (80675) Has a channeled H-shape design to promote spinal alignment during self myofascial release 6 x 6 inch diameter textured massage roller Aids therapy, recovery and massage for myofascial release and is idea for spine, back, legs and arms Heat-sealed EVA foam construction maintains shape and resists moisture and bacteria Massage therapy training and recovery aid for speed, agility, strength, power, running, football, volleyball, basketball, baseball, soccer and all other athletic, fitness, weight, or cross training