RBHK&reg; 2.5 Mil Poly Mailers Envelopes Shipping Bags Self Sealing, White100 Bags (9"x12" 100 Bags) Total 100pcs poly mailers,size:(9+1.6)"x12",glue size: 0.32" High quality self sealing poly mailers Water, tear and puncture resistant Pressure sensitive adhesive provides a high strength durable closure High-efficiency mailers are perfect for shipping a wide variety of non-fragile items