Padded mailers are commonly kraft paper with a polyethylene bubble lining. Mailing boxes are typically cardboard, and some mailers are made from polypropylene or polyethylene film, depending on the listing.
Typical protective features include bubble-lined walls for impact protection, heat-bonded or watertight seams, and tamper-evident self-adhesive seals. Together these features help protect contents from shock, moisture, and tampering.
Pack sizes vary widely. Listings show single units and multi-packs, with common quantities including 1, 3, 10, 25, 50 and references to packs of 10/25/50/100.
Product details list inside/useful dimensions for different mailers. Examples from listings include 8.5"×13.5", 8.5"×11", and 9.5"×13.5" for various padded mailer sizes.
Weights vary by product. Representative values shown in listings include 1.2 oz, 0.2 oz, 0.38 oz, 0.44 oz, 0.32 oz, and some boxes/envelopes listed in pounds such as 0.25 lb and 0.4 lb.
Product details list common uses such as mailing papers, documents, letters, photographs, paintings, and small items like jewelry, stones, coins, and buttons.