I have been using this jacket atop 2 dry fit layers in 30 degree weather and it has performed beyond my expectations. I purchased this at the sale price of $59.95 and consider it a steal. I highly recommend!
In response to faa3096218: The sizing and fit are SEMI-FIT. I purchased the XXL in this Louis Garneau Geminix Jacket ; I have a 47.5" chest and 38" wasit and it's pretty snug. Almost perfect for my 3 layer winter riding outfitting. I wear a polyester short sleeve dri-fit shirt under a long sleeve dri-fit shirt with the jacket as the outer most garment. I have been riding in 30 degree weather (NYC) with no problem. I have a Gore Bike Wear Men's ALP-X Jacket and have not had to use it this winter because of this Louis Garneau Geminix Jacket.