These mailers are an excellent option for mailing documents, art, photographs and other flat products. Prevents crushing, bending and other types of damage. There are different types available which include Brown (Kraft) Rigid Mailers w/ Tuck-In Tabs, Self-Seal Brown (Kraft) Rigid Mailers, White Rigid Mailers w/ Tuck-In Tabs, Self-Seal White Rigid Mailers, White Rigid Mailers (Light-Weight Post Office Style), Gussetted White Rigid Mailers and Golden Kraft Jiffy Rigi Bag Mailers.