The HexaBumper 2-Inch Flasher's design eliminates many of the disadvantages of traditional round bumpers and training dummies and holds up to the daily routines of pro trainers. Leak-proof valveless design for long life with six flat sides that offer dogs easier grip and hold. Firmer feel helps reduce chomping tendency. 10" floating throw rope is included. The color contrast of the black and white flasher make this the easiest bumper for dogs to find in any light condition. Set of six 2" bumpers.