Size & quantity - the built-in foam padded envelopes 12x15 inch dimensions make these mailers a versatile choice for shipping a variety of small items. Sold in a 100 pack. Built-in foam protection padding - secure your items with confidence thanks to the built-in foam padding that cushions against shocks and jostles, ensuring they arrive in good condition. Recyclable padded mailer envelopes - recycled kraft paper mailers for an environmentally conscious mailing option. Each envelope is crafted from recycled materials, supporting sustainability. Enhanced durability - crafted to resist tears and punctures, these mailers protect your goods from the rigors of transit, while built-in foam padding cushions contents against impacts and vibrations. Effortless sealing - save time with our self-sealing design. Simply peel, press, and pack for a secure seal - no additional tapes or staples required.