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 role-playing in style and make sure to teach your puppy lots of new tricks. The chest harness will look great on your obedient puppy. The neoprene harness size S/M is fitting for a chest between 38 and 42 inches.