Jchuwrote a review of Millet Belay Composite Jacket - Men's on February 17, 2012
I always wanted a Millet jacket to add to my collection but they are somewhat expensive. I decided to take a chance on the Belay Composite and in general I like it. It's as described a sofshell upper married with a primaloft lower. The softshell is par for the course in this price range - light fleece on the inside, water resistant (but not waterproof) and stretchy. The primaloft insulation is minimal fill; this is not a jacket to wear standalone on very cold days.
The fit is very nice though. I am 5-9", 170lbs, 33 waist and a Medium fits on the money as a standalone jacket. I could squeeze in a light fleece if I wanted a snug fit. Here is what annoys me though - the zipper. It's European and reversed - you slide the zipper in on the right side. Just plain awkward for us used to the other way.
I like it, but it's more of a nice to have jacket than a need to have.