RumbleRoller Deep-Tissue Massage Roller, Blue, 31-Inch Full size model (31x6) long enough to roll the widest of your back and both legs on one pass. Original Density surface intended for people new to foam rolling or anyone who has experienced positive results from conventional foam rollers. Provides firm BUT FLEXIBLE surface to relieve muscular pain and tightness similar to the thumbs of a massage therapist Stretches muscle and other soft tissues in multiple directions, breaking down "knots", increasing your flexibility, and relieving your pain. Higher strength and tear resistance, wonderful feel, permanent retention of shape, guaranteed to outlast and outperform compared to any foam roller on the market.