Comic Book Mailer Filler Pads 7-1/4 x 10-3/8" These pads are made from sturdy 200-lb-test kraft corrugated material. Use with our comic mailers MCOM14, MCOM28(shown) if mailers aren't quite full and to prevent damage from punctures or accidental cut-thru. A GREAT INVESTMENT! 1000 quantity is wholesale priced and a +Freight Item. Call for Freight Quote.