This coat, I call it a coat because it is longer than my Weekender Jacket, works great for me. If I wear a long sleeve shirt, this coat keeps me comfortable in temperatures as low as the high 30's. If I wear a short sleeve shirt, this coat keeps me comfortable in temperatures ranging from the high 40's to the high 60's. When it gets warmer, into the 70's, 80's and 90's, I wear one of my three Weekender vests so as to be able to carry more of what I choose to carry and can't comfortably carry in the pockets of light weight shorts. The Weekender people really do know how to use fabrics and designs to keep me comfortable in temperatures ranging from the high 30's to the high 90's. The pockets really are great, especially when traveling, especially by air.