These bulk brown stay flat mailers are the ultimate solution for secure postal packaging. Measuring 9x11.5 inches, they provide ample space to safeguard your photos, magazines, comic books, art prints, posters, documents, and collectibles. With a sturdy 450 gsm thickness, these shipping envelopes for comic books offer reliable protection during transit. With these mailers, you can be assured that your valuables are secure and well-protected whether in storage or transit. The self-adhesive seal ensures a hassle-free closure, while the stay flat design prevents bending and damage. Made from brown kraft paper material, these paper postal flats add a touch of sophistication to your packaging. Whether for personal or business use, these photo mailers simplify your shipping process and help to ensure that your valuable items reach their destination in pristine condition. Streamline your packaging with our 100-pack of comic mailers, the perfect choice for secure and convenient shipping for all of your documents and posters.