as advertised, this is a slim fit suit, but not to much.  What I don't like much is that the jacket is 2in short in length.  I ordered a 48L. The sleeves are great, but the jacket is a little short, but that may be the style of the cut when you order a slim fit suit.  The material is wool but feel more like spring/fall weight- definitely not winter.  The suit came folded which caused deep creases in jacket, will have to send to Cleaners.  Pants fit very well.  I am a 39" waist so the 42" waist gives me the right amount leg and hip room - feels very comfortable when sitting, It feels more like a 41" waist which is just perfect.  Jacket is a little tight around the belly, but nothing a few setups won't cure.  Looking forward to wearing to a wedding next month.