Most cross country skiers will work up quite a sweat on their excursions, but when it's really cold, it's nice to have a drink of something replenishing and hot. The answer is one of these ultra-tech thermoses from Thermos Nissan. These lightweight, stainless-steel vacuum containers come in a variety of sizes and styles, and they're great for cold drinks and water too—it's just as easy to get dehydrated in cold weather as it is in hot.