NeoPro cat collars by Zee.Cat are made from weatherproof material -polyester strip with TPR coating. The safety breakaway buckle automatically opens if your cat gets stuck out while and about. - Breakaway buckle with fast release smart system - High quality weatherproof material - Rubber Zee.Cat logo for a classic touch - D-ring for attaching bell or ID tag - Adjustable to achieve the right fit Adjustable size, fits approximately 20-30cm neck.