About this item 10x13 POLY MAILERS 100 PACK- The package contains 100 pack 10x13 inch shipping bags. Our top quality shipping envelopes are unpadded, but extremely durable and sturdy for shipping non-fragile items. (Shirts, pants, books, socks, scarves, etc.). DURABLE & PRIVACY PROTECTION - JinRuiKJ mailing envelopes feature a single-sided 2.4mil strong thick design with high strength and are tear resistant, stretch resistant and puncture resistant. Also, the inner lining of the package bag is made of dark material to protect your privacy. POWERFUL SELF SEAL & WATERPROOF - Just seal each package securely with a simple peel and fold. The strong stickiness prevents your items from being lost in transit, and even when used in fog or rain, they can safely deliver your valuables to their destination. STYLISH DESIGN - Our mailers poly bags are designed by professional designers to help your customers distinguish your brand by providing them with a personalized experience, you can enter the store to see more options. PERFECT PACKAGING SOLUTIONS - If you're tired of the traditional polymail bags, opting for them can help your brand stand out from the rest. Our 10x13 mailer bags are the perfect packaing solution when you need to ship non-fragile items quickly.