About this item Featuring a super-strong self-sealing adhesive strip, These #6 3/4 business envelopes are esay to use, no glue required. And the powerful adhesive strip is a key element in ensuring the safe delivery of important items and information. With its advanced security pattern, CREGEAR #6 small envelope is great for personal or commercial use, providing added protection for sensitive information. CREGEAR 6 3/4 security envelope also features a windowless design, allowing for easy printing, labeling or handwriting of addresses, making it both convenient and efficient. Measuring 3-5/8 X 6-1/2 inches, CREGEAR privacy envelope is made from high-quality 24-pound white woven paper, providing the strength and durability you need. Ideal for sending invoices, letters, checks, gift cards, cash, etc.