S=7.25x12"" 25PC, M=8.5x12"" 25PC.Our bubble envelopes feature a generous lining of air-filled bubbles, effectively shielding your valuable items from damage caused by external impacts. The adhesive strip is protected by a peel-off release liner, allowing for quick and effortless sealing. This extra-thick shipping envelope features a durable polyethylene outer layer that resists punctures and damage. Thanks to a reinforced edge-sealing process, the envelope offers exceptional water resistance and tear resistance. This polyethylene shipping envelope is an ideal choice for small and medium-sized businesses it is easy to use and requires no additional packaging materials. It is perfectly suited for shipping a wide variety of items, including cards, CDs, DVDs, jewelry, cosmetics, photographs, sunglasses cases, books, and more. Weight: 0.97 lbs.