Oh... I have an idea why--- they are from a China Co.... Often their sizes are WAY smaller than ours--- for instance---I ordered a skirt from a Chines website--I generally wear a 2X or a 20. Well I looked at their size chart and could see that they had really small measurements marked XX etc--- sooo, I took a chance and ordered the largest they had ---I think it was a 4X or 5X---here that would be way too big for me --- LOL.. when I got the skirt the waist would have fit a woman about size 6 or 8 it was tiny! amazing!