100 Counts Kraft Road Warrior&reg; Mailers Variety Pack - 7 Sizes including #000, #00, #0, #1, #2, #3 and #4 Kraft Bubble Mailers. Please See Product Description for Size Distribution and Mailer Dimensions. Sturdily built with bubble lined wall construction for extra protection during transit. Self Sealing Bubble Mailers provide outstanding shipping protection. Seamless bottom affords additional cushioning protection along with greater overall strength and safety. Fully laminated kraft and air cellular construction provides outstanding stiffness and puncture resistance. Convenient self-seal closure saves labor and eliminates the need for staples and tape.