White Pouch Self-Sealing Envelopes -Inside Dimensions: 9 x 12 with full bag usage Pack of 100 poly mailer bags that can be utilized with most fragile to medium-weight merchandise High strength shippers with rugged seams so its contents will remain protected even when overpacked Poly-mailers that are a convenient form of packaging for production lines given its adhesive peel-n-seal closure Lightweight polyethylene shippers that protect your products privacy with its opaque and tamperproof