S Size- diameter 31cm, neck circumference 38cm M Size- diameter 38cm, neck circumference 43cm L Size- Diameter 44cm, neck circumference 50cm XL Size- Diameter 51cm, neck circumference 60cm Lighter and Thinner Design - Different from normal plastic cone, our elizabethan collar for cats which is is made of high-quality polyester, which makes your pets move more freely and feel more comfortable when wear it, does not interfere with their normal activities such as eating, sleeping, sleeping, playing, etc. Waterproof Material - The cat cone collar is made of water-resistant polyester, easy to wipe clean with mild soap and warm water, You don't worry about getting wet while drinking and it can keep your pet's wounds in a dry environment, which is good for wound recovery. Help for upper body wound - If your pets have upper body wounds, the cat cones can prevent your pets from biting and licking the wound after surgical, promoting quick wound healing. PLEASE NOTICE, it may be not much useful for lower body wounds (like front and back paws). Please confirm the position of the wounds before placing the order.