Inner circumference: 24-32cm 【Natural Cooling Effect & Reusable】The cool ring utilizes the properties of PCM material, freezing naturally at 28 degrees Celsius, eliminating the need for a refrigerator and maintaining coolness for a long time. It's reusable, making it economical and an effective measure against the heat. 【Easy to Wear & Adjustable】 This dog neck cooler has buttons for easy attachment and can be adjusted to fit the size of the neck. It can be used for dogs and cats. 【Summer Essential & Night Glow Function】 An indispensable item for heatstroke prevention and heatstroke countermeasures. Enjoy a comfortable summer with your beloved dog during training, walks, and outings. It also has a night glow effect. Not only can your dog enjoy cool and comfortable walks even on hot nights, but it also ensures your dog's safety! Bucci Boo Cool Ring Dog Neck Cooler Heatstroke Prevention Cooling Collar Cool Neck Heatstroke Countermeasures Buttoned Night Glow Effect Smiling Zoo S 17.16 ⭐️Free Shipping⭐️ Please check the actual photos for the product condition♪ #Mii's Shop Click here for a list of products✨ ＊Immediate purchase welcome・Midnight silent purchase OK◎ ＊First come, first served for only one item ＊Bulk purchase welcome, feel free to comment ・Please understand and purchase due to home storage and shipping in simple packaging (⁎ᵕᴗᵕ⁎) ・Please check the actual photos for the product condition♪ ※In order to sell at a slightly lower price, we may ship the item without the box due to shipping costs.