It is recommended that choose sizes according to the latest measurement of your pet before buying dog cones. If your dog is between sizes, please size up. Please note that S and M size is small, please measure the size carefully before purchg. ATTENTION: After-Sale Warranty. If there is any problem of our product,please contact us directly, we are always here to help you. also The picture only shows the wearing effect.Please refer to the detailed size chart according to the measurement method before purchg. Adjustable: smim's products contains three sizes, from M to XL, and each product size is suitable for different pets. Gave more size options. Safe & secure: Dog Collar for Postoperative Wound Healing, Great for pets recovery from surgical operation or injury.This dog cone collar is designed to protect your pet from injuries, rashes and postoperative wounds. SIZE: Perfect fit height about (L) Suitable neck circumference 34-45cm(L), sufficient depth helps to overcome licking, itching and scratching circulation. MATERIAL: The exterior is made of waterproof Nylon Cloth, Easy To Wipe Clean With Warm Water, soft material will let your dog wear it comfortably.