Massage Setting To Relax Lower Back Or Neck Can Provide Relief From Conditions Aggravated By Poor Posture Place Between Your Knees While Lying On Your Side For A More Comfortable Sleep Can Be Used In Combination With The Obusforme Highback Backrest Support Or Your Cars Headrest For Added Neck Support Made With Polyurethane Foam Elastic Strap Holds The Obusforme Supporting Roll With Massage In The Position You Desire Brushed Polyester Cover Can Be Removed And Sponge Washed Small Lightweight And Portable For Use Anywhere You Sit - At Home In The Office And On The Go Battery Operated - 4 Aa Batteries (not Included)