Premium Quality Strong Blue Postal Mailing Bags.   Ideal for postage, poly mailing, parcel, gift, mail, posting and shipping. Suitable for home, office, shops, warehouses, commercial & industrial purposes for everyday need.   All our mailing bags are fully opaque, items placed inside the bags are not visible through the film to protect your privacy and confidentiality. Perfect for mailing your items at a cost efficient price, while maintaining great protection.   Self Adhesive 40mm peel & self seal. 100% Recycled & Eco Friendly Mailing Bags   Size: 17x21 \" ( 430x535 mm ) Quantity: 50