You can hold a Kelvin Active up to a light and see through them pretty easy. Light doesn’t have to be all that bright either.
I picked one up after hunting season, so I haven’t had a chance to try it out. But I’m guessing it won’t much warmer than a mid weight fleece. Certainly doesn’t have the level of insulation that Primaloft or down jacket has.
I’m anxious to see what it will do, but I’m betting I won’t quit carrying a Kenai or down jacket.
Definetely, the Kelvin Active is a second base layer and not an insulation layer. Nothing to do with KUIU`s Kenai or Super Down Ultra jackets. It cannot even be considered a mid weight fleece. Just my two cents.
I have just bought Sitka's Fanatic Hoody
http://www.sitkagear.eu/products/solids/next-to-skin/fanatic-hoody to use as a second base layer over their Core Lightweight Crew and can't wait to use it! I believe this, or their Core Midweght Zip-T and a Peloton 200 or a R1 over it for colder temperatures, may be the optimate first layer system.
Very interesting thread. Thank you to all contributing, specially to bwinters.
