I had a 4-wheel wheelchair made for my 13.5kg Corgi by Pochi's Wheelchairs. It has some scratches and dirt as it's used outdoors. It's made of lightweight aluminum. It comes with a leash for walks. It also has a neck support. Please refrain from purchasing if you are particular about the condition, as this is a used item. The original price was 40,000 yen. Thank you for looking.