Product Description * The Beaphar Flea Collar for Cats contains an insecticide that kills fleas on your cat and prevents their return for up to four months. * This collar is waterproof, and has been specially designed to stretch if your cat gets it caught while out and about, enabling your cat to slip its head out. * The collar can also be adjusted to fit any cat. * Suitable for cats from 6 months of age. assorted colours