Extra long mailer bag Long size design – 12×43 inch (50 Pcs). great for Yoga mat, umbrella, or other extra long things mailing, you can also the use eco-friendly poly bags as storage bag for long items. Lightweight- The poly mailers are light enough for shipping. Convenient – the 3 mil plastic bag stick to themselves, making it easy to close them and not require tape. Strong Self Seal – the self-sealer is very strong. please do NOT peel off the paper if you are not ready to seal the package! Waterproof design – The poly mailers are made from polyethylene which are provides a high strength closure that is water and dirt resistant.