The GoFit Rolling Massage Bar is a great tool to awaken tired muscles pre-workout and to help knead aching muscles, post workout. No matter how hard you workout, run, ride, or play, the GoFit Rolling Massage Bar is a great way to relieve stress and rejuvenate muscles. FEATURES: Roll away tension, and massage sore muscles anytime, anywhere Rolling relief pattern releases knots and massages deep tissue Firm foam massaging surface Smooth ball-bearing roller system Ergonomic handles with soft-grip rubber Outside roller diameter: 1.25" (3cm) Length: 16.75" (42.5cm) Length of roller: 9.5" (24cm)