Sizing is consistent. 3b are about 28.15" on 36r. Sleeves about 24.75" and shoulders 17.5". I have total three 3b suits. 2b on other hand a bit shorter 27.85", other measurements same. They are loose fit with roomy chest and waist and alterations take care of all this. I have two 2b suits from them. Pick stitching every where and my tailor hand stitches after alterations (extra charge). Working cuffs and completely unlined. Great summer suit .