No. 5 Self-Sealing Kraft Bubble Mailers, 10.5" x 16" (Box of 100) Plus 50 9x12 Pink Poly Bags These popular padded envelopes are sturdily built with bubble lined wall construction for extra protection during transit. These tough premium shippers are proven solutions for a wide variety of items. Self Sealing Bubble Mailers provide outstanding low cost shipping protection for a wide variety of products. Shipping labels adhere securely to the recycled Kraft paper cover so the incidence of lost packages is reduced. Upgrade your company image and ship with confidence with these self-seal mailers.