Simmons Charcoal Carly Double Sofa Bed with Beautysleep Mattress - $800 Barely used, like new. Purchased at The Bay on sale for $1,550 Will include mattress cover, sheets & pillow case plus blanket - ALL for $800 The sofa bed is considered a double bed. From arm to arm it is 68" wide and 36" deep. When fully opened the length is 90".