Sizing for M is Chest (38.6 - 41.3in), Waist (31.5 - 34.6in), Hip (37.4 - 40.6in) 13oz, 3-pocket (1 zips) Shell is Pertex Microlight 20D ripstop stretch. This is new never worn with the tags still on. I also have one in Black both have the same lighter blue inside insulation. I will list separately because of pictures limits. This jacket is designed for any high output workout pulling sweat away from your core from running to uphill skinning. It does that through the Polartec Alpha Direct insulation: This insulation is unique, and sits directly on the skin for a very cozy feel. It breathes exceptionally and has decent warmth.