The Original Moist Heat Pack Designed For Use In Soothing Sore Muscles Aches And Pains Designed Specifically For Relief Of Nagging Lower Back Pain Stomach Cramps And Leg Arm Or Shoulder Aches And Pains Adjustable Strap Can Be Comfortably Secured In Various Positions On The Body For Complete Mobility Use It Hot Or Cold Filled With 100% Natural Organic Grains 20.75 L X 7.5 W With A 27 Elastic Strap Attached (unstretched); When Stretched The Maximum Length Is 72