Includes 100 rigid mailers measuring 6.5″ x 4.5″ (16.51 x 11.43 cm) plus 5 stickers for labeling or reminder notes Constructed from 350 gsm cardboard to help reduce bending, crushing, and surface damage during shipping Self-adhesive closure provides a firm seal without needing extra glue or moisture Built-in tear strip allows the envelope to be opened more easily while helping protect the contents Suitable for mailing art prints, photos, media, jewelry, documents, and other flat items Designed for a range of uses including everyday household mailing, graduation, and general shipping needs