321 STRONG Foam Roller - Medium Density Deep Tissue Massager for Muscle Massage and Myofascial Trigger Point Release, with 4K eBook - Aqua

12. 75 inches x 5. 25 inch diameter ,  lightweight yet rugged solid core massage roller with EVA tread and triple grid 3D massage zones mimics the finger , palm , and thumb of a therapist's hands . Medium density muscle roller is comfortable to use - making it easy for beginners , but still effective at penetrating the soft tissue layer of tired muscles . Soft enough to use while in pain from lower back injury , sciatica or plantar fasciitis . One of the best recovery tools to treat muscle pain , increase performance and flexibility. Rolling before and after exercise sis part of a great stretching routine . Increases blood flow to massage site , flushing away stored lactic acid . Stretch overworked and strained muscles of the leg , arms , and feet by rolling during your warm up and cool downs . Provides instant benefit to the hamstring , IT band , glutes , and calves by delivering superior massages at home or in the gym . Loved by runners , exercise athletes , yoga and pilates students , swimmers , physical or sports therapy patients , and aid those just doing a normal fitness workout . Great for the arch of the foot , and any part of the superior body but the spine or neck . Protected by 5 US Patents : 9,345,921 ; 9,539,167 ; 9,656,112 ; 10,278,890 ; 10,695,260 eBook Companion Guide - Please download our companion eBook right here on this page, under the section called "Product guides and documents" or eBook can be downloaded for free via the manufacture’s website, also arrives as an email attachment