i ordered an XL as a 38C (i took my exact measurments when buying but i dont have them on me rn)
binding ability is pretty decent, i have a relatively large chest compared to my proportions and it flattens me pretty well (pictures included of with and without shirt)
i know wivov likes to pride themselves on being sensory friendly, but this is not the best option if you are sensitive to textures. while the seams are all finished on the insides, the straps have a ribbed sort of texture which isnt super pleasent when its rubs against you
theres alot of side spillage in the armpit area, and it makes the whole binder a bit uncomfortable, like the arm holes are too high.
take this with a grain of salt as i very well could have gotten a size too small, or am just between sizes. i have the swim tank binder in a 2xl from here and it is loose to the point of not even really binding at all.