About this item Valuable Packing: Includes 18 pcs white double adhesive tape paper catalog envelopes of 9×12 inches Protecting Privacy: Manila envelopes have 120 GSM paper which is ideal for privacy and durability. Additionally, brown can protect your information Viscous and Convenient: Peel and seal makes using letter envelopes anytime, anywhere. Self seal envelopes are more saving your time Printable Freely: Printable gift card envelopes are compatible with inkjet printers rather than laser printers. You can DIY envelopes letter size according to your own ideas. Also, 9×12 envelopes are perfect for using with address labels Wide Application: Security envelopes provide protection in mailing, storage and handling for documents and business correspondence. Also, mailing envelope is a good choice to be money envelopes for cash, invitation envelopes, business envelopes