foil covered board; sturdy. IMPORTANT, PLEASE NOTE: This item may be considered oversized once packed for shipping. Oversized packages are typically more expensive than the shipping calculator may quote you, as the shipping carriers do not have the exact dimension of the entire package that accomodates all of your products and/or this item. Once we have your order packed and can verify shipping dimensions and weights, we will contact you ONLY if the shipping is higher. Your payment method will not be processed until we receive authorization from you on the price difference.