* Features A Plush Multi-ply Cover Designed To Focus Heat Toward The Body Andprovide A Snug Secure Fit * This ?unplugged? Version Of Moist Heat Therapy Offers The Maximum Inportability And Convenience * The Patented Non-allergenic Crystal Fill Does Not Leak Smell Or Encourage The Growth Of Fungus And The Porous Surface Traps Up To 40% Of It's Weight In Atmospheric Moisture For Reliable Moist Heat Therapy * Natural Moist Heat Works In Three Ways: - Blocks Pain Signals To Your Brain - Relaxes Muscle Tissue To Relieve Cramps Or Spasms - Increase Circulation To Enhance The Healing Power Of Your Own Body * Outer Multi-ply Fabric Includes A Vapor Barrier To Direct Maximum Moist Heat Where You Need It Most * Wide Elastic And Velcro Strap Holds The Heat Therapy Snug And Secure Against Your Skin With Gentle Compression * Holds Pack In Place While You Continue Regular Activities * More Economical Than Disposable Single-use Heat Packs