These 12 x 15 1/2 inch yellow poly mailers are made from 2.5 mil polyethylene with a silver inner lining and a self-sealing adhesive closure that requires no tape or heat equipment. The yellow exterior improves visual sorting speed in high-volume environments, and the outer surface accepts labels, stamps, and inkjet or laser-printed shipping documentation without adhesion issues.

The bright color coding makes these mailers a practical choice for e-commerce fulfillment centers, catalog distributors, subscription box operations, and retail replenishment workflows where rapid lane sorting reduces handling time. Reinforced seams maintain envelope integrity when contents approach capacity, reducing damage claims on lightweight goods.

Each mailer is puncture, tear, water, and tamper-resistant. Cases contain 100 mailers and ship via parcel carrier.