Features: 【Double-Window Design】Easily view contents without frequent opening. 【Confidentiality Pattern Protections】Inner layer with privacy pattern effectively blocks light transmission, ensuring contents remain unseening. 【Premium Paper】Durable and tear-resistant, safeguarding documents from damage. Resistant to breakage or deformation for secure long-distance delivery. 【Standard Size Compatibility】Accommodates multiple letter formats, enhancing office efficiency and meeting diverse mailing requirements. 【Friendly Paper】Supports green office practices, reducing environmental impacts. Specifications: Product Name: Double Window Envelope Product size: 241x105mm/9.48x4.13in Paper thickness: 100g Product description: The envelope is printed with blue confidential patterns, and there are 2PVC transparent window on the front Package Includes: 50/100pcs Double window envelopes note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution