15 count!!! Large Poly Mailers 24x24 - Thede shipping bags 24x24 in a new color grayed jade green. This gentle green color can add a special touch to bland packing and shipping. Let your customers receive the package as happy as receiving flowers. Strong Adhesion - these mailing envelope Self-sealing strips are made with a strong is using four-season adhesive that holds up in both very hot and cold, ensuring that your large mailers bags won't be replaced during shipment.