product description1.COMFORT TECHNOLOGY: Unique, patented, and flexible collar design keeps your kitty comfortable yet protected with a smooth surface interior.2.KILLS PESTS FOR FULL BODY PROTECTION: Kills fleas, ticks, flea eggs and flea larvae and also prevents flea eggs from hatching.3.EASY & SECURE APPLICATION: Long-tapered end is thread through a secure dual buckle system to help with a quick and easy application.4BREAKAWAY POINT: For those mischievous cats, the pre-determined breakaway point provides an additional layer of safety.