Bright pink poly mailer set with black "thank you" script and heart accents. Self-sealing metallic inner lining. Cute and eye-catching packaging for orders. Inner Size: 6x9 inches; Thickness: 2.4mil; 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! Powerful Self-Sealing and Waterproof. Each mailer bags use strong adhesive that won't melt even in hot weather, just a simple peel and fold to seal each package safely and securely. The strong stickiness prevents your items from being lost in transit, and they can deliver your valuables safely to their destination even when used in fog or rain.