The DOUBLE TUG design was first conceived and patented by Katie's Bumpers in 2002 as a breakthrough innovation for trainers and regular folks alike to be able to train and interact with your dog. K9 Unit trainers have been using the Double Tug for target-training for years by holding the handles on the ends, keeping the hands away from the dog's bite as it launches to bite down on the bumper. The handles on the ends can also be used for hanging the bumper when practicing launching at a target, or for basic tugging fun with your pup. Great for training, tugging, and fetching on land, water, or snow! Go outside and play with your pup!