The Beaphar Plastic Flea Collar for Cats is perfect for combatting fleas on your cat and prevents their return for up to 4 months at a time. The collar is water resistant, and has been specially designed to stretch if your cat gets caught up, enabling the cat to slip its head out. Suitable for cats over 6 months of age. Complete with silver bell. How to UseThis collar has been specially designed to release your cat if it becomes caught up. To fit the collar, simply slide the free end through the buckle, and tighten to leave enough room to insert two fingers between the collar and neck. Do not fit too tightly, to ensure against irritation, but do not fit too loosely, or the cat may be able to get a foot or tooth under the collar, in an attempt to remove it, and become caught up. Remember to periodically check and loosen the collar if fitted onto a growing cat. Cut off any excess collar with scissors, and throw it away with your domestic rubbish. If your cat should become caught up, the special design will allow the collar to stretch, enabling your cat to slip its head out.