Increase weight and thickness Each White9.25X11.75 inches Rigid Mailers made of thick cardboard weighs 96/1000 pounds.This means it features exceptional rip, tear and puncture resistance, made to last. Friendly reminder: Our Rigid Mailers are heavy, please remember to calculate its weight when you mail, so as not to pay extra postage. But if you like the sturdy Rigid Mailers, it is undoubtedly the best choice.
