9 1/2 x 13 1/2" Kraft Utility Flat Mailers. Save money on shipping with these lightweight, economical mailers! Mailers are made from .015 Chipboard, 100% recycled paperboard and are 100% recyclable. Top loading design. Feature convenient, pressure sensitive closure and tear strip for easy opening. Ideal for mailing soft goods, photographs, documents and promotional items. Made in the USA!