[SMALL & MEDIUM DOG]- Comes with 8 different sizes for small and medium dogs,puppy and cats. Please refer carefully to the size info below before purchasing it. If you think your pet is in between sizes, choose the bigger one.[REFLECT SUNLIGHT AND EXCESS HEAT]- Evaporation Acceleratng Microfiber which can reflecting UV and excess heat. Not only can provide coolness, but also prevent your dog from getting sunburned.[LIGHTWEIGHT & COMFORTABLE]-Cooling jacket is lightweight, which doesn't put much pressure on your dog, and it is highly airy, well-ventilated, and cool, which will make a pleasant and fresh walk during summer days.[EASY WEAR & EASY CARE]-Ice vest with elastic material and pullover design that is easy to put on and take off.And its machine washable.[HIGH VISUALITY]-The highly reflective design will keep your dog safe everywhere while having outdoor activities at night.[EASY TO USE] (1) Soak the vest in cool or cold water (2) Wring the water out before putting it on your dog (make sure to close the velcro) (3) Shake remaining water out and put it on, time for a cool walk