The Anxiety Wrap uses acupressure and gentle, constant, maintained pressure to relieve stress and end or lessen fears in dogs. The Anxiety Wrap has rear leg straps that create rear-end awareness to target pressure points in the hindquarters where dogs often hold tension. The straps are adjustable and removable. The Anxiety Wrap is made of a stretchy, thin, breathable fabric. It contains elasticized elements which apply pressure to acupressure points and allow the fit to be customized to each individual dog. Velcro closures are located on the aspect of the garment that lies over the dog's back. Available in 7 Sizes. To measure - 1. Have your dog stand while you measure the circumference of the fullest part of the dog's ribcage (normally the girth). 2. Pull tape measure slightly snug and refer to our sizing chart to see what size to order.