This jacket I feel is more wind oriented with some water resistance. Warmth-wise, it's not terrible, but not super warm. It's very good at cutting out wind, and does resist light amounts of water, but it really does not insulate heat as well as I expected. It claims it is at a Warm2 rating, but my Warm1 fleece is probably warmer than this. I suspect it is because this uses Polartec Wind Pro, whereas my fleece uses Polartec Thermal Pro. The Wind Pro does it's job of beating the wind, and only a moderately decent job at keeping insulation. The Thermal Pro is the opposite. Overall, don't trust the Warm2 rating necessarily, but it is still an excellent light Flex Fleece jacket that I like that is suitable still for most general outdoor adventures. I used it on hikes, climbs, camping trips, and evens ski trips with extra layers underneath. Plus it's a cool looking and feeling jacket for casual use around the town.