Not your regular flats: Trinity in Chocolate blends rich, everyday luxury with effortless style. Designed with plush rPET lining—made from recycled bottles—to reduce pressure, plus hidden arch support, and our podiatrist-designed footbed, it combines comfort with effortless style. Ballet flats but better. If you commonly wear the same shoe size in your FRANKIE4s, we recommend sticking with this. However, if your feet vary between sizes, we suggest starting with the bigger of the two sizes first. We’ve found it’s not uncommon to go up half a size in ballet flats, due to their neat, sleek profiles.