An 11. You do have to be careful with them when folding and unfolding them but that is literally my only critique. struggles to cut them I cant imagine this material would fare well anywhere that isnt immaculately clean either. I agree with many reviews that the T90 is tuned to be a " more fun" sound . So I went with the one with no room for shrinkage and figured I?d hand wash or something. They are extremely comfortable to me. I would definitely order a size up for sure though! Oh & they do stretch. ) but I got them in and I think it looks great!