Extra Large Flour Sack Towels, Jumbo Blank Tea Towels 33"x38", 100% Cotton, Set of 7Extra Large 33 38 Set of 7 100% Cotton The Size Bakers Reach For And the Towel That Does the Rest, Too At 3338 inches, this is the largest flour sack towel in Mary's lineup and it's no accident that 3338 is also the standard size stocked by baker supply brands. When you need to cover a proofing bowl, drape a risen loaf, or handle a job the 2727 is simply too small for, this is the towel. Same 130 thread count diagonal weave. Same 4 side hem and corner