Online sellers and small business owners, these poly mailers are exactly what you need for efficient shipping! This pack of 12 large envelopes measures 13.7 x 16 inches - perfect for clothing, t-shirts, blankets, socks, scarves, and other soft items. The 2.36 mil thickness provides excellent protection against water, tears, and punctures during transit. The self-sealing feature is super convenient - just peel off the strip and press down for a secure closure without needing tape. These mailers are lightweight too, which helps keep your shipping costs down compared to boxes. The water-resistant material means your items stay dry even if left on a rainy porch, and the durable construction handles the rough-and-tumble of shipping without tearing open. Whether you're running an Etsy shop, eBay store, or just need reliable packaging for gifts and returns, these poly mailers deliver professional-looking results without the professional price tag. They're that perfect balance of affordability and quality that makes your shipping process smoother and more efficient. Stock up your shipping station with these versatile mailers that make packaging orders quick and hassle-free!