The all new SMT-GT features GRIP Tech molding technology with a recessed and grooved center area to encourage proper mouth alignment and discourage "head or tail" retrieving. The centralized GRIP Tech alignment area allows your dog to have more of a closed mouth grip for better breathing capability on water retrieves. "Hard Mouth" is discouraged by training your dog to naturally hold better with a softer, gentler grip. The SMT-GT is molded with a an extremely durable and long lasting 100% waterproof material and a knotted throw rope is included. Proprietary polymer material is up to 40% softer than competitors for a softer, more natural feel. New recessed and grooved GRIP Tech area encourages proper mouth alignment and discourages "Head or Tail" retrieving Centralized GRIP-Tech alignment area allows your dog to have more of a closed mouth grip for better breathing capability on water retrieves GRIP-Tech also discourages "Hard Mouth" by training your dog to naturally hold better with a softer, gentler grip Patent Pending "S-Grip" technology for easier gripping and holding Contoured gripping surface throughout to better fit your dog's mouth and grip Molded with extremely durable and long-lasting 100% waterproof material Knotted throw rope included Proprietary polymer material is up to 40% softer than competitors for a softer, more natural feel