【Package Includes】- It contains 200 pack self-adhesive #1 Black coin envelopes, each size is 2.25''x3.5''. 【Privacy & Security】- The Black coin envelope are more elegant and have stronger opacity than traditional envelopes. 【Nice Quality】- Our coin envelopes are made of high-quality Black kraft paper material, which has excellent wear resistance and is strong enough to store more items. 【Easy to Use】- When sealing, apply an appropriate amount of water to the water glue and press lightly for one minute. This effectively protects your items from exposure to moisture. 【More Freedom】- There is no text or pattern printed on the envelope, you can directly stick a small label or You can freely doodle and draw in the blank space and give full play to your talents! Bonfasvo is a professional manufacturer of office supplies, we are committed to providing you with excellent office supplies such as envelopes, gift boxes, greeting cards, etc. Please feel free to contact us with any questions, we will reply within 24 hours.