Features A true winter shelter should have: wider-diameter poles for stability in wind and snow; lots of vents to limit condensation; and numerous loops on the rainfly for anchoring guylines in storms. Also consider that external pole clips make for faster setup in harsh weather than sleeves or internal poles.
Size Two travelers need at least 30 square feet of interior space to fit bulky winter gear, plus vestibules big enough for two packs. Pile into a new tent with all of your gear to make sure it fits. Claustrophobic? If living space matters more than low weight, a three-person tent provides ample room for two plus winter gear.