Martelli Cutting Mat & Ironing Surface all 3 included 16.75" DiameterGet ready for roundabout quilting with our Round About 3 Piece set! The set includes a Round About base that rotates on 24 ball bearings, a 17 diameter cutting mat, and an iron top. Both the cutting mat and iron top feature our get a grip material to keep your work in place. Additionally, the material in the iron top reflects heat back onto the material youre ironing to press both sides at once. Note: When using the iron top with the Round About, be