The outer surface of the Hardcore Fire Hose Dog Toys is reinforced with multiple tighly woven plies of fabric. Inner core is made of long-weaing smooth synthetic rubber. Fire hose material is made for abrasion resistance which offers added durability for a soft toy. As an improvement to the original version, the new Stretch 'n Fetch Fire Hose Dog Toys also have two tennis balls inside for added fun and entertainment. Available in two sizes: Medium measures 14.5 inches long with the handle unstretched and Large measures 17 inches long with the handle unstretched.