Describe: Plant essential oil formula Naturally extracted plant essential oils are used to repel fleas and mosquitoes and refuse mosquito bites. Refillable and additive-free design, the pet collar is built with a cotton blend material that locks in drips and keeps them going. ADJUSTABLE NECK CIRCUMFERENCE Three neck size adjustments, control the size of the collar through the connection hole, suitable for more pets. SLOW RELEASE TECHNOLOGY Forms a protective layer and emits scent to form a protective layer against invading pests. SAFE MATERIALThe pet collar is made of TPR and PP material with smooth surface, which is comfortable for pets to wear without hurting the skin. Specification: Material: TPR+PP Color: black, orange Dimensions (approx.): 2 x 40cm/0.79 x 15.75 inches (height x neck circumference) Three neck adjustments: 30-33cm/11.81-12.99in, 33-36cm/12.99-14.17in, 37-40cm/14.57-15.75in Suitable for pets: cats and dogs Package: 1pc x anti-flea bag ar1 bottle x pet drop Note: 1. Due to light and screen differences, the item's color may be slightly different from the picture. 2. Please allow 0.5-2cm differences due to manual measurement. Products from NIUNIU's store