The Staples No. 9 Self Seal-Privacy-Tint Double-Window 300 Envelopes are high-quality envelopes perfect for shipping and mailing. Made in the United States by the reliable brand Staples, these envelopes are designed with a self-seal feature for secure closure. The privacy-tint design adds an extra level of security, while the double-window allows for easy addressing. With dimensions of 3.875″ x 8.875″, these envelopes are ideal for various business and industrial packaging needs.