I can only say I was pleasantly surprised how much I liked this jacket on my ski trip. It is not heavy (except for battery). It performs great in temps of 20-30 degrees and was more wind proof than I thought it would be. I can’t rate how well it would do in wet conditions as it was sunny cool days on my ski trip. I plan to try it in wet conditions when I’m in a situation I can switch jackets if it is soaking up snow/slush. I would turn it on low at these temperatures on lift ride and usually needed to shut off when skiing. Interesting but the middle of your back feels like you have it on when it isn’t. I think it absorbs heat from sun too. I bought it on sale so the price was nice. Again, it probably won’t replace a gortex jacket for extreme conditions but works great in the cold.