Simplicity 1506 Waistcoat: Big and Tall Boy's and Men's Waistcoats Sewing Pattern. I made view B in Scottish tweed in size 2XL This is a very straight forward pattern. The only major change I made was with the interfacing. It seamed a bit odd to me that the pattern called for interfacing for the whole front of the piece. I considered that interfacing with tweed would make the waistcoat very stiff, so I left it out. I was very glad I did.