metronic purple bubble mailers 50 pack, 4x8 bubble poly mailers, self-seal shipping bags, padded envelopes, bubble polymailers for shipping, mailing, packaging for business, bulk #000 metronic why choose us? we metronic is the professional manufacturer specializing in producing all sorts of packing material.such as bubble mailers, poly mailers, bubble wrap roll etc.our design group is a talented and experienced team,are a popular option among many businesses for shipping items. feature: waterproof,tear-proof,lightweight, tamperproof our mailers have a full bubble inside. it provides your package double safety protection and protect your privacy better. its cushioned wraps help ship your products to customers in a safe. specification: color: purplel size: usable size: 4x7"; total size: 4x8" qty: pack of 50 note : please note the size before purchase: our bubble mailers usable size is 4x7 inches. when the length and width of your item reach just 6x9 inches, and the thickness of your item exceeds 1 inch, please choose a larger size.