Send your partner to obedience school with the Ouch! Puppy Play product line. Designed for a comfortable fit from high-quality neoprene, your little pet will learn to obey your commands in no time. Enjoy your role in style and make sure to teach your dog plenty of new tricks. The jockstrap is open at the back to showcase your dog's backside. The S/M size of the neoprene harness is suitable for a waist between 28 and 32 inches.