I was contacted by the folks @warmfront about trying their product. Obviously, the picture gives away the answer to that. This is the Warmfront Koselig for Men with the Tiger Shark collar. Yes, it is as simple as it looks but the Koselig works perfectly at keeping the wind off of your chest. I wore it on a 515 am ride with the wind blowing 15-17 mph out of the south and the temps were high 40’s which isn’t that warm with no sun. Anyway, my route went directly into the wind on the way out and directly on my back on the way in. The Koselig kept me comfortable on the first half of the ride and the temps were just right I didn’t get cold on the way in. I wore this alone under my jersey and it was also under my bib short straps. I have to say that it did bunch a little under the strap but I didn’t even notice that until I got home. The Koselig is very lightweight and comfortable. It also blocks the wind perfectly and is way easier to take off than a base layer. The Koselig can be layered when the weather gets colder and is a great option for other sports like running and skiing. I’m definitely going to keep using this product, I think it is a great option for cooler weather. #warmthefrontup https://www.instagram.com/p/BvNiBVkgdXb/?utm_source=ig_tumblr_share&igshid=1disyh7s5uk8d