Let me start by saying my previous set of sailboat racing gear was Gill Coastal. They were insulated and very heavy. These are called Offshore Race so I expected them to be a bit more insulated. I've used them a few times this year (Feb-May), and they are excellent. I have not had them out for an overnight race to test the warm factor (ie I may need an extra layer underneath). What I can say is that they are light and easier to move around in, very comfortable and VERY WATERPROOF/Durable. I do appreciate the lightness but wish there were hand pockets in the bibs for when you don't have the big coat on but are hanging on the rail for a long board. I would say they run true to size.. I have a small and am 5'5 and 130lb. If you were to layer more you might want to size up.