My husband is currently a US 2X-L sometimes 3X-L so we got the largest size which was the 3X-L the material is great quality and comfortable unfortunately didn't fit my husband fit more like an XL SO DEFINITELY GO A SIZE UP i was going to return but decided to gift it to my brother-in-law which fit him perfectly and he loves it so we weren't disappointed will be a returning customer just work on the sizing only reason I rated 4stars 🤗