12" x 15.5" x 2.5 mil White & Silver Tamper-Proof Waterproof Poly Mailers with Perforated Seal - 500 Pack for Ecommerce Shipping, Document Protection, and Secure Package Delivery

Tamper-proof, water resistant poly mailers come with a perforation below the permanent tape closure. These 2.5 mil, co-extruded, opaque courier bags have a white exterior and silver interior.

This item is manufactured to be white on the outside, silver on the inside. You cannot see through this product in interior light. Provided in cases.

Co-extruded blend of low density and linear low-density polyethylene (LDPE & LLDPE).

Tamper proof, water resistant, and a perforated tear opening below lip for easier opening.

This product complies with California Proposition 65 and all applicable CONEG heavy metal restrictions.