You've already got the S, the L, and the B... all you need is the U (for slub, and because it's a u-neck, in case that wasn't clear) A custom fabric that is a blend of two yarns (50% Supima Cotton and 50% Micromodal). Modal comes from recycled beech wood, which is a natural and sustainable source of raw material. So, eco-friendly and naturally absurdly soft. Heyo!