All our mailing bags are fully opaque - items placed inside the bags are not visible through the film. Perfect for mailing your items at a cost efficient price, while maintaining great presentation. 2000 strong olive green coloured mailing postal bags, size 12"x16" (305mm x 406mm), with 40mm 'peel & seal' lips. These are premium quality bags, co-extruded and made from 100% virgin polymer.