These kraft envelope-style flat mailers are ideal for sending out documents that range from invitations and photos to passports and financial statements. Made out of thick cardstock, these stay flat mailers will keep your photo documents, magazines or comic books secure and wrinkle-free as they go through the mail service. The perforated tabs at both sides of the flap make them easy to tear open, while the self-adhesive design tightly seals the envelope to keep your documents contained inside. The clean style of the rigid mailers give this 25-pack a professional look that is great for both business and personal use.