(Sullivan Supply) Composite sweating system features the benefits of neoprene and the durability of leather, all in one deluxe unit. The removable neoprene lining is constructed of the same closed cell SBR copolymer neoprene material as the Black Heat neck sweat. The material is scientifically proven to be ideal to reach maximum sweating potential for cattle. Sewn with a no-fray fabric binding around the outer edges to prevent tearing. The durable leather casing surrounds the neoprene to provide support and protection. Hoof-and-loop closures attach the neoprene to the leather, holding it firmly in place, yet allowing it to be removed for cleaning or replacement.