Harris Wharf's boyfriend blazer is a best seller, unlined in a tech viscose, it is comfortable like a cardigan and looks smart like a blazer.  It has long sleeves, a patch pocket and 2 button closure, with an additional button at the notch collar.  The tech viscose fabric is essentially impervious to wrinkles and travels beautifully - and it's a comfortable, year-round fabric.  56% viscose, 36% polyamide, 8% elastane.  40=XS 42=Small 44=Medium 46=Large.  Dry cleaning recommended. Emme is 5'7" and Margot is 5'4", both are wearing the 40.