This listing is for 20 - 10"x13" Cool Looking Rainbow Butterfly self sealing poly mailers. Great way to add excitement to your shipping and save on shipping fees. A quick and easy alternative for wrapping your special gifts. These Butterfly Mailers will definitely help MAKE YOUR PACKAGES STAND OUT!! These beautiful high quality self sealing poly mailers will definitely catch their eye!! You will be extremely pleased with the quality and colorful design. I know these are great quality bags since I use them for shipping out my orders!My carrier loves seeing the variety of poly mailers! She says the plastic bags are easier to grab and hang onto. Great way to save on postage as these are extremely lightweight!Thank you for looking!