I actually ordered a few days before everyone in this thread started saying the EFM sweaters fit slim lol. I wear S in other Uniqlo stuff and they fit well. The cardigans actually fit pretty well, they're a tiny bit tight but definitely wearable as there is a decent amount of stretch to them. The length is the main reason I'm returning them. I reordered them in M since they're $10 cheaper now anyways. As for the shirt measurement inaccuracies, 2.5" is a bit ridiculous.