Fosmon #6 Poly Bubble Mailer 12.5 x 16, Extra Wide Padded Shipping Envelopes, White (50 Pack) EXTRA WIDE  Exterior Size: 12.5 x 16. Usable size: 12 x 15 inch. 2.35 mil. Fosmon Size #6 Self-Sealing Bubble Mailers provide outstanding low-cost shipping protection for a wide variety of products. Perfect size for Books, Magazine and Documents. SAVE ON SHIPPING COSTS  Each Fosmon mailer is lightweight and it will save you on postage. Despite being light, they are strong enough to protect your items from being damaged. STRONG & SECURE  Fosmon mailers are made from the highest quality in material that provides high-strength seams which ensure your items stay safe until opened. WATER & TEAR RESISTANT  Your items will always stay safe and dry when shipping in Fosmon mailers, regardless in rain or snow. SHIPPERS APPROVED Approved to use with major carriers  USPS, UPS, FedEx, DHL and more.