The Pittsburgh Steelers "Redd Up" every time they play the Cleveland Browns, and now you can "Redd Up" too! Part of our Pittsburghese 101 Collection. Redd Up is Pittsburgh slang for TIDY UP. Pittsburgh likes to swing around their terrible towels, but this is the towel that really does the job! XL Flour Sack Cloth, 100% Cotton. Printed in Pittsburgh using water based ink. Water based ink absorbs into the fabric for a smoother, softer feel. YINZER PRO-TIP: Redd up and dry them dished you just worshed. You never know when your nebby mother in law is gonna show up.