Perfect for mailing your items at a cost efficient price, while maintaining great presentation. 10,000 strong large red coloured mailing postal bags, size 17"x24" (425mm x 600mm), with 40mm 'peel & seal' lips. These are premium quality bags, co-extruded and made from 100% virgin polymer. All our mailing bags are fully opaque - items placed inside the bags are not visible through the film.