Avery Canvas White 3in Training Bumper - The first training bumper innovation in years! The Avery Canvas Training Bumper boasts a HexaBumper six-sided design! This innovative Avery design eliminates many of the disadvantages of traditional round bumpers. With rounded sides, your dog will obtain a better hold and improved grip of this Avery trainer. Rugged 900D DuraMax cover Center-weighted for level floatation Attached braided rope