High quality: Our self-adhesive envelopes are made of reliable kraft paper material, safe and sturdy, with adhesive on the back to help seal the envelope and prevent item loss; Their reliable materials will serve you for a long time.Packaging includes: 100 After Work Key Delivery Envelopes - Night Delivery Key Envelopes are made of size 10 envelopes, 4 1/8 inches wide and 9 1/2 inches long, with peeled off sealing caps. There is enough quantity to meet your usage needs, and you can share it with family and friends.Easy to use: Each key delivery envelope has a clear template, including customer return instructions, personal information, repair/service request list, other information blanks, terms, signature, and date, making it easy for you to record and maintain work details; It is lightweight and portable, and won't take up too much space.Usage: Repair delivery envelopes. Each overnight key delivery box envelope clip comes with a neat pre printed checklist for checking required car repairs, bringing great convenience to your life.QUAILTY ASSURANCE:we firlmly believe that you will love our STICKERS that if you have any question,Please feel free to contact us and your satisfaction is always our top priority.