Color: Exterior: Gray Interior: White Inner circumference: Approximately 30-35 cm Height: Approximately 25-27 cm Please note that these measurements are approximate and may have slight variations due to being measured by an amateur. I am selling this because my dog (a 2.5 kg poodle) didn't use it. It has been used about twice. It's a fluffy and soft cushion that's comfortable to sleep on. It has non-slip material on the bottom and can be used in all seasons. Also, you can use it in two ways by removing the dome shape. It can be washed in the washing machine with a net. For shipping, it will be compressed or made compact. The price includes shipping, so please refrain from significant price reductions. Please refrain from purchasing if you are sensitive to used items, as it has been handled and used by a person. Returns are not accepted after purchase. Shipping will be on weekends.