640 piece set of poly Mailers, thank you cards and stickers. Elegant black and gold design. Perfect for small businesses. 40 10”x13” Poly Mailers Lightweight and easy to ship, these mailers poly bags are a great alternative to bulky and expensive shipping boxes and can save you a lot on shipping. If you have a lot of orders to mail each day, these poly mailing bags are perfect for you! 100 Double-Sided Thank You Cards for Small Business Owners and Online Retailers - Package Insert Notes to Show Your Appreciation 500 pc Roll Thank You Stickers