They change the measurements for their clothes and face masks without mentioning it. You may think you are ordering the same article that you ordered 4 months ago just to find out it’s different (too high, small, different fit). When pointing it out, uniqlo doesn’t care and if you bought an item that falls under their weird return policy, you are stuck with it. This goes for their pullovers, bras, face masks and probably all articles. I have experienced it with the 3 above
