I am with TurkeyBacon on this one. Of course it all depends on what "winter" is for you. For me, winter is anything below 15* F which necessitates very different gear than just a 3-season with an extra blanket. I have a Big Agnes 0* down bag I use solely for the winter. Well worth the cost and weight. Of course if "winter" for you is a chilly night in florida, then you'll likely be fine.