You might look at our baselayer bottoms and wonder what the difference is between them and long johns. We'd like to say there's a good reason for the name change, but honestly, baselayer just sounds better. What you should really be asking is, "how will these change my life"? Great question, we're glad you asked it. On the ski hill, these will keep you warm while still wicking away unwanted moisture and perspiration. At home, they're ideal for lounging around mid-winter to fight off the evening chill. Slip them under a pair of pants and stay toasty at the office while everyone else shivers through the meeting. Best of all, no one will even know you have them on, making this long underwear your secret to success.