The Southern Champion Tray 23073 bakery box is made of SBS paperboard, which is white on the inside and outside, has an attached tuck-in lid, and can be used to hold and carry baked goods. White SBS (solid bleached sulfate) paperboard is thicker and more rigid than paper, is suitable for holding baked goods, and can be recycled - just be sure to remove the window film before placing in the bin. It can be printed with a logo or a business name. The attached lid tucks into the box to help secure its contents. A cellophane window provides a view of the box's contents. The lock corners facilitate assembly and enable the box to be folded flat for storage or transport. The box measures 12 x 12 x 5 inches (L x W x H), which is the perfect size for a cake or other baked goods.