I purchased an L size for my beloved dog on Yahoo! Shopping, but it's a bit too big, so I'm listing it. It has only been tried on. Previously, an M size I bought on Amazon fit perfectly and I loved it, but my dog's chest circumference grew to 40cm, making it too tight. The L size seems a little large for my 4kg toy poodle. Please refer to the L size column in the 8th photo. (This is the size chart from the store where I bought it) [Water Resistance] This transparent plastic cover is designed to protect your beloved dog from rain and dirt. [Easy to Put On] It's easy to put on with snap buttons, allowing you to enjoy stress-free walks without hindering your dog's movement. - Material: Transparent plastic - Size: L Thank you for looking.