Outside sizes include 8.5" x 14.5", 9.5" x 14.5" and 8.5" x 12"; corresponding inside dimensions are listed for each product.
They feature a kraft paper exterior with a polyethylene bubble liner; some listings also note recycled content in both the paper and bubble layers.
Most padded mailers use a self-adhesive (self-seal) closure. One cardboard mailing box listing does not specify a closure.
Product descriptions specify a bubble-lined interior, mentioning "2/16 inch bubble lining" and "bubble lined wall construction" for added protection.
Available package quantities shown include 1, 10, 25, 50, and 100.
Descriptions emphasize a durable recycled kraft paper exterior and state the envelopes are water resistant; the inner polyethylene bubble liner is noted as waterproof.