UniversalModel: Stand Collar CollarSize: SWaterproof Test: NoWelcome to our store!Package includes: One receiver + twoWarm suggestions:1.Each item has its own size chart due to different styles, and sometimes it may be much smaller or larger than usual. Please check the size list of the item you want to buy before placing an order.2. Due to manual measurement, there may be a difference of 2 to 3 cm in size, please be careful when measuring.3. If you are not sure about your height, dont worry, just check your height and weight. We will recommend the correct size for you!3. Due to the monitor, the color may be slightly different, thank you for your understanding!4. It is recommended to wash your hands with cold water. It can help objects keep their shape.