[SIZE] Measure your dog's neck size and check the sizing table before choosing the size;If your dog's neck size matches two sizes, please choose the smaller size. [PERFECT FOR APPLE AIRTAG] Our Airtag holder made of soft silicone,which is stronger, smoother, and unbreakable,it has 360 degree protection for Apple Airtag which can prevented airtag from drop, shake and scratch. [NATURAL AND MATERIAL] DOGWONG dog collars are made with cotton and linen,are natural with good permeability,suitable for daily wear by dogs. Hand-made, twice quality inspections, to ensure the durability of the product. [USE OCCASION] When you take your pet to shopping, beach, camping and traveling, you will never worry about losing your pet. Our airtag dog collar will locate and find them when they are misplaced.Our airtag holder does not have waterproof function. Please use a waterproof Airtag to match it. [BEST SERVICE] If there is any problem with the product, please contact us, we will definitely give a satisfactory solution in 24 hours. dog collar