Self-Sealing StayFlat Mailers – Enhance your packaging experience with self-sealing Cardboard StayFlat Mailers with high strength seams to keep your contents intact even if over packed Optimal Packaging Solution and Supplies – Designed to ship or store documents, artwork, posters, blueprints, graphics, and charts StayFlat Mailers – ideal for small businesses, these Cardboard StayFlat Mailers offer a professional solution for shipping needs & are designed to fit various package sizes, making them versatile for many products 100% Reusable and Resealable – Simple materials, excellent performance; Made in the USA