Self-Sealing Paper Envelope Brand: FS Self-sealing, peel and stick, adhesive keeps contents secure and tamper proof Extremely durable and lightweight paper material helps save on postage Strong seams for maximum protection Surface easily accepts ink, stamps, and labels Approved for USPS, FedEx, UPS, and DHL Size / Dimension Available: 6″ x 9″ 9″ x 12″