The solid wood seat has a very slight contour to fit your buns. It comes in your choice of 4 stains to coordinate with your kitchen or bar cabinets. If the stool you select has a rectangular seat, the wood seat version will be the same shape. If the stool you select has a round seat, the wood seat version will be the same shape. Wood seats are not avialbale on all styles so please make sure the style that you have selected can take a wood seat.