Elite 3 mm neoprene;Collapsible; Insulates 12 oz. cans and bottles; 4" x 4"; Each year 5% of Net Operating Income is given to help support a host of social service organizations supporting the homeless, children and veterans and in need. The company supports The Greatest Gift Catalog Ever and their partner agencies. For more information on how to help support these great causes please go to WWW.TGGCE.ORG;