They are super comfortable and keep me warm!

These are the best and most versatile UA running leggings that I own. I wear 32w 30l pants and the medium fits me perfectly. I use these when it gets below 40 deg F and they are comfortable all the way down to the mid 20s. They are not wind proof but I have yet to need a winter legging that is totally wind proof. They are not waterproof but they still kept me warm when they got wet from knee-deep powder. 99% of the time I wear my shorts over these. If it is sub-20s, then I just wear the 3.0 version under my shorts. They have a working fly which is a great feature that so many other leggings do not have. They are also thin enough that I can wear under work slacks. The skin-facing side is a unique waffle-like brushed surface that works amazingly well to regulate your body temperature. This is my third pair of these and they are a bargain if you can get them during one of the semi-annual sales.

These under armor thermals are a family favorite.

I've been wearing under my pants and they've kept me warm during 0 degree weather

These are great for my winter garage workouts. Slim layer fit really well under joggers. I always size up for tights and they fit nicely. Great amount of stretch, which I really need as a dancer.

My whole family loves these under garments for winter weather out on the farm. Great way to stay warm when you have to be out in the elements!

The Under Armour Men's UA Base 2.0 Leggings are a popular choice for athletes and outdoor enthusiasts alike. Here are some advantages of these leggings: Moisture-Wicking Technology: These leggings effectively wick sweat away from the body, keeping you dry and comfortable during intense workouts or cold weather activities. Thermal Regulation: The Base 2.0 fabric provides warmth without adding bulk, making them ideal for layering in colder conditions. Stretch and Flexibility: The leggings are made from a blend of materials that allow for a full range of motion, making them suitable for various activities, from running to hiking. Durability: Under Armour is known for its high-quality construction, and these leggings are no exception. They can withstand rigorous use while maintaining their fit and feel. Comfort Fit: The ergonomic design and flatlock seams help to minimize chafing, providing a comfortable experience even during extended wear.

Perfect addition for colder days fit well, stretch just right. great as a bae layer for those cold windy days on the golf course