The eBay Branded Bubble Mailers are a set of 15 padded envelopes measuring 9.5″ x 13.25″. These self-seal envelopes are designed to be water proof, moisture resistant, and tear resistant, making them ideal for shipping and mailing. They are USPS, UPS, DHL approved ensuring they meet the standards for reliable delivery. The large exterior size provides ample room for packaging and protecting items during transit, making them a practical choice for businesses and individuals needing to send packages securely.