10 Best Long Underwear For Women 2025 in the United States

Thermajane Long Johns Thermal Underwear for Women is designed for cold weather, making it a solid choice for anyone needing an extra layer of warmth. A notable strength of this product is its heat retention capabilities, ensuring that your body heat stays locked in, which is perfect for chilly days or evenings. The fleece lining adds a luxurious softness that enhances comfort, making them great for lounging or as a base layer under clothes.

Another advantage is the moisture-wicking feature, which helps keep you dry and odor-free, regardless of your activity level. This is particularly beneficial for those who might wear them for extended periods, whether at home or out and about. The fabric has a 4-way stretch, providing a snug fit that allows for freedom of movement, which is essential for an active lifestyle.

Some users might find the snug fit too tight, especially if they prefer a looser style for lounging. While the fleece lining is soft, it could be warmer than expected for some individuals, potentially making it less ideal for very high-energy activities. Additionally, being made of synthetic materials (92% Polyester, 8% Spandex), it may not appeal to those seeking completely natural fibers.

Cuddl Duds Women's Thermal Underwear is a heavyweight 2-piece set designed to keep you warm in cold weather, making it a great choice for anyone looking for cozy base layers. The brushed fleece lining on the inside adds a plush feel, while the soft matte exterior enhances comfort. With its moisture-wicking fabric, this thermal set effectively absorbs and evaporates sweat, which is a significant advantage for those active in chilly conditions.

The inclusion of spandex provides flexibility, allowing for easy movement whether you're lounging at home or out and about. The snug fit is complemented by thoughtfully designed features such as modern rise leggings and thumbhole sleeves, making it functional and stylish. The 50+ UV protection is another plus, offering an extra layer of defense against harmful rays, which is beneficial for outdoor activities.

There are a few drawbacks to consider. The heavyweight fabric may be too warm for milder winter days or indoor use, which could limit its versatility for some users. The snug fit may not be comfortable for everyone, especially those who prefer looser clothing. Additionally, the material, primarily polyester, may not be as breathable as natural fabrics, which could lead to overheating during extended wear.

Cuddl Duds Thermal Underwear excels as a winter base layer with its warmth, moisture management, and comfort features, making it ideal for women who spend time outdoors in cold weather. Be mindful of the potential issues with weight and fit, depending on your personal preferences.

The Cuddl Duds Women's Thermal Underwear set is designed to keep you warm and comfortable during colder weather. One of its standout features is the brushed fleece lining, which offers a cozy feel against the skin. The moisture-wicking fabric does a good job at absorbing sweat, making it suitable for both lounging and active wear. With 93% polyester and 7% spandex, the material provides a snug fit that allows for some stretch, which is great for movement. Additionally, the UV protection adds an extra layer of safety when you're outdoors.

A notable advantage is the stylish design, which allows it to function as a base layer or as loungewear. The thumbhole sleeves in the top and the modern rise leggings enhance the functionality and comfort. However, some users may find that the heavyweight material can feel a bit bulky, especially if you're looking for something ultra-lightweight. Also, while the fabric is designed to be breathable, it can get warm if worn in milder temperatures.

The construction of the seams is generally good, but it’s worth noting that some users might prefer a seamless design for added comfort. Additionally, while the product is machine washable, it’s essential to follow the care instructions to maintain its quality.