Assortment features 4 ea 12" x 12"; 4 ea 14" x 14"; 4 ea 12" x 18"; 2 ea 15" x 24"; 2 ea 18" x 36" with Grid. Maywood Studio wool ironing mats are an essential ironing accessory for all quilting, sewing, and crafting needs. The porous, textured wool grips materials and absorbs heat and moisture, creating the ideal surface for pressing and blocking. Pin into the mat to block knits and textiles and use it with or without steam on a protected surface for professional-level results. Maywood Studio Wool Ironing Mats are made with 1/2” thick, 100% New Zealand wool.