Custom Printing: Personalize your envelopes with your company logo, return address, or other custom designs to enhance brand recognition. Single Left Window: Features a single left window for easy visibility of recipient addresses, streamlining the mailing process. Self-Seal Design: Eliminates the need for moisture or adhesive, allowing for quick and easy sealing of envelopes. High-Quality Material: Crafted from durable 24lb white wove paper stock to withstand handling during transit and maintain a professional appearance. Bulk Quantity: Includes 250 envelopes per box, making it ideal for businesses or high-volume mailing needs. Aimoh Self Seal Security Envelopes with Left Window - Super Strong Self Seal - Security Tint - Size 11 x 25 cm - 10.9 kg