Wooden butterfly-shaped pet wheelchair with four casters for easy movement. - Shape: Butterfly - Material: Wood and fabric - Casters: With 4 casters - Straps: Adjustable straps I bought this for my 8kg Corgi whose hind legs were weakening, but it was difficult for him to use when his hind legs were still moving, so I hardly used it. It probably depends on the dog's personality. The size was not a problem. I try to remove the hair as cleanly as possible, but there may be some remaining. Please understand that this is a used item.