UPDATED FULL SET OF HARNESS BELTS - Updated full set of separate reflective harnesses eliminates the need to purchase additional chest straps or worry about them tearing away from your clothing. Replaces the first-generation straps sewn onto the garment, which would fall off the jacket when subjected to large external forces. Latest Waterproof Fabric - Made of top-quality waterproof fabric, the cotton layer of the coat will not get wet even in heavy rain. The inner layer is made of composite fleece fabric, which is warm and cozy, and due to the excellent workmanship and moderate thickness, the pet will not feel heavy. LATEST ALLOY ZIPPER - This is an advanced alloy zipper for suitcases and backpacks without any worries. The zipper liner prevents dog hair from getting caught in the zipper when it is pulled. Replaces first generation resin zippers that occasionally break. WIND-PROOF & REFLECTIVE - Retractable high collar protects against wind. Elastic band on the belly is designed to fit better and keep you warm. Reflective strip design on the back effectively ensures the safety of your dog walking at night. Size S: Neck circumference: 26.5cm, M: Neck circumference: 29cm, L: Neck circumference: 31.5cm, XL: Neck circumference: 34cm, 2XL: Neck circumference:36.5cm