Black Poly Bubble Mailers provide outstanding low cost shipping protection for a wide variety of products. Each mailer is made of Polyethylene Film with a 3/16″ bubble lining for maximum protection. These lightweight mailers are designed for postage savings. This mailer offers a Peel-N-Seal secure closure. This auction is for 500 pieces. Pay today ship today ( M-F before 3pm pacific ). Return Policy: Customers are responsible for covering the return shipping costs for all returns.A 20% restocking fee will be applied to all returned items.If this is your initial purchase with us, we highly recommend requesting a sample before placing your order to minimize the potential need for a return.