I bought this for my beloved cat's vet visit (=^ェ^=) I was worried about just using a collar and leash, so I got this to prevent escape in case of an emergency... It was good that I put it on, but her head immediately slipped out and she wriggled free (^-^; It seems like it was too big………… It's a shame to throw it away, so I'd like another cat to use it!! My cat weighs 3.9 kg. The neck circumference of the clothes is 27-28 cm (not including the Velcro part) When attached, it's 8-9 cm The body part is about 14 cm when attached. When opened, the length is 33-34 cm (not including the Velcro part) I'm not sure if I measured it correctly, but I hope you understand that these are amateur measurements. I've cleaned off the cat hair, but I apologize if any are still attached!! I can offer a discount if you purchase it with other items I have listed (*^^*) If you have any questions, feel free to comment (^_^)