Nylon Dog Collar Spring Summer Flea Collar For Cats Anti-mosquito Sealing Ring Insect Repellent Necklaces Puppy Pet Feature:The ingredients are: bitter oil, citronella oil, fatty ketone the principle of the ingredients is that the plant essential oils made from these ingredients are not liked by insects, so as to achieve the purpose of repelling insectsSlow release technology forms a protective layer, emits an unpleasant odor and creates a protective layer to ward off insects and fleasSafe and hassle-free plant essential oilsFully washable, convenient and practical, washing without affecting the release of essential oils. Specification:Material: NylonPackage: Blister Size:S (36CM) cats and dogs universalM (52CM) cat and dog universalL (70CM) cat and dog universalNote:Due to the different monitor and light effect, the actual color of the item may be slightly different from the color showed on the pictures. Please allow 1-2cm measuring deviation due to manual measurement.1 X Dog Collar