If you are concerned about the color difference, please buy with caution. Features: Unsurpassed Water & Tear Resistance – Superior side seams combined with Heavy Duty polyethylene. High Quality envelopes highly resistant to water, punctures, and tears. Colorful outer surface/Black inner lining – Highly opaque for content privacy and professional boutique style appearance. Pressure sensitive self seal – Easy packing, tamper-evident, and super secure closure. Specifications: Color: Grey(as the pictures) Size: 10″x13″ Feature:Self-Sealing Thickness: 2.5 Millimeter Package Include： Poly Mailer bags