3D textured rollers measure 16.5cm*6.5cm with triple massage zones to replicate the fingers , thumbs , and palms of the human hand .Roll before and after your work out at the gym , Pilates , or yoga to condition and stretch muscle tissue , and remove painful trigger points . Dual grid design has finger zone with ridges , and spiked bumps on the opposite side .Great for runners , after a long workout , or as part of your stretching routine . Heavy Duty EPP construction tough enough for athletes , and still comfortable enough for a beginner .Choose from lightweight and portable model or get full body coverage with our 17" model to get physical therapy grade massages , deep stretches , and acupressure relief all in the privacy of your own home .Speed up recovery , treat muscle pain , increase performance , flexibility , and mobility . One of the best fitness tools to help your body recover , rolling before and after exercise is critical for beginners and pros alike .