This vest is lightweight, super packable and warm. I get cold easily, so I take this with me on all my trips. When snowshoeing, cross country skiing, mountain biking and hiking I put it on when I stop for breaks. It's also great at night when the temperature drops, and I need that extra warmth that just a fleece alone doesn't give me. It folds up really small into its packing pocket and I keep it stuffed in my pack all the time.
I've had my vest for 5 years and it's still going strong. The loft is still good, and the nylon has never ripped, and I've probably used it almost every day during that time.