Hi Neil,
I received one light IRVIN flying jacket/Moto-lita just before Christmas and I'm very happy about the quality. Also in Italy we are having an hard winter with temperatures some days in the morning -9/-10°C. This jacket is very warm and practical to wear and overall light. About the size in the site of MOTO-LITA you can put yours sizes and the jacket will be perfect for your body.
ciao
fabrizio