There have been several occasions at this time of year where I’ve walked out of the house and into the freezing cold Winter temperatures and had on a sweatshirt and jacket. By the time the car warmed up and I was on my way, I had to turn the car temperature all the way back down because it got too warm. When I got to the mall to start my Christmas shopping, I was so darn hot that I was stopping to buy a drink and feel very uncomfortable. This is one of the biggest problems the whole concealed carry jacket market seems to forget.
If you’ve dressed with a holster that is outside the waiste and you were intending to have the gun covered by the jacket, you’ll have problems. The best advice I would have is to wear a base layer like Under armour and a heavy shirt like the Woolrich Elite CCW shirts like the Oxford long sleeve. This shirt is a long sleeve shirt that gives you an out layer to wear over a firearm and still carry flashlights, knives ect in the front pockets. There is a hidden pocket behind the front pocket that is very easy to access. If you pocket carry a j-frame, this is a great place to store a reload or pepper spray.