For many winter enthusiasts, the words, "jeans," and "cold weather" usually don't go in the same sentence together. Anyone who lives for a good pair of denim jeans, it's hard to ignore the comfort that comes with these durable and cotton garments. Even though they aren't the best clothing to wear in the winter, you and a whole lot of others are going to wear them anyway. No matter the cold temperature, snow, or wind, jeans can make winter a lot more comfortable if you wear some thermal wear under them.So, yes, you can wear thermals under your jeans. It's also a good habit to get into. Winter can be long and usually cold. You might as well do your best to stay comfortable while keeping your denim style in full swing during the winter months.