MAILERS4U 8.5 x 12 Inches Kraft Bubble Padded Mailer Envelopes No.2, Pack of 50 (9x12-BM-KFT-50PK) Constructed Of High Quality & Durable Kraft Material Compatible With All Shipping Providers: USPS, UPS, FEDEX, DHL, TNT, ETC. Self Seal Peel And Stick Closure