This listing offers 500 envelopes from Shield, a trusted brand in the industry. The envelopes are 12″ x 15.5″ and feature a self-seal design for secure and efficient shipping. They are perfect for use in packaging and shipping, and are ideal for businesses and industries in need of reliable and high-quality mailers. The envelopes are made in China and are sure to meet your needs. About this itemUsable Space: 12″ x 15″-Width X Length.Thickness: 2.5 Millimeter.Color: White-conceals packages from visibility.Made from premium polyethylene-which enables easy label, stamp and ink application.Plain exterior-ideal for logo/brand printing and marketing.