Pratt MJ-1 Self-Seal Stay Flat Mailer, White, 6″ x 8″ (Pack of 100)FiberboardStrong, rigid paperboard mailers made with high quality recycled materials Durable mailer protects items, such as documents, photos, and CDs, while enhancing your corporate imageRecycled content makes a positive contribution to environmental concerns 100% RecyclablePressure-sensitive, self-sealing adhesive closure; reliable and tamper-evident Release liner peels off quickly and easilyClean white material for a clean, professional look.