10 Best Mens Thermals 2025 in the UK

The Under Armour Men's UA HG Armour Leggings Pants are designed for active individuals seeking durable and comfortable sportswear. One of the main strengths of these leggings is the flexible, lightweight, and robust HeatGear fabric. This material ensures that the leggings are quick-drying and allow for a full range of motion, which is great for various sports and physical activities. The compression fit provides a snug and supportive feel, enhancing muscle performance and recovery. Additionally, these leggings feature an ergonomic design that keeps seams away from high abrasion areas, reducing the risk of chafing and increasing durability.

The strategic mesh panels are another plus, as they provide extra ventilation, making the leggings more breathable. However, there are some potential drawbacks to consider. While the material is good at wicking away moisture and drying quickly, the high polyester content might not offer the same level of natural odor resistance as some other fabrics. This could be a concern for those who are highly active and need their sportswear to stay fresh for longer periods. Furthermore, the skin-tight fit might not be comfortable for everyone, especially those who prefer a looser fit.

These leggings are machine washable, which is convenient, but the care instructions should be followed carefully to maintain their performance and longevity. The Under Armour Men's UA HG Armour Leggings Pants are an excellent choice for athletes and active individuals looking for high-performance, durable, and comfortable compression leggings. However, those who prioritize odor resistance and prefer a looser fit might need to consider other options.

The Merino.tech Merino Wool Base Layer set for men is a versatile option suitable for various temperatures, as it comes in different weights: lightweight (165 g/m²), midweight (250 g/m²), and heavyweight (320 g/m²). The midweight set (250 g/m²) included in this package is ideal for mild to cold conditions. One of the standout features is the material - 100% superfine 17.5 micron Merino wool, which is known for being incredibly soft and comfortable, eliminating the itchiness often associated with wool products. This makes it perfect for all-day wear without discomfort.

Additionally, Merino wool is excellent at regulating body temperature, making it breathable and suitable for year-round use. It also has natural moisture-wicking properties, keeping you dry by absorbing sweat effectively. The odor-resistant feature is particularly beneficial for active use, as it helps maintain freshness even after prolonged wear. However, the product does require special care, with the recommendation to hand wash and lay flat to dry for longevity.

Another point to consider is the fit, which is generally snug and designed to be worn as a base layer. This might not be ideal for those who prefer a looser fit. Additionally, seams can sometimes be a concern with base layers, but this set is designed to minimize rubbing and bunching, enhancing comfort. The included Merino wool hiking socks add extra value to the package, making it a considerate gift option. This product is a good fit for individuals who need reliable thermal wear for outdoor activities or daily use in cooler climates.

The Heatwave® Pack of 2 Men's Thermal Trousers offers a practical choice for anyone seeking warm underwear baselayers. Made from a blend of 50% cotton and 50% polyester, these thermals are designed to balance comfort and durability. They have a TOG rating of 0.45, meaning they can hold a significant amount of warm air close to the skin, which is great for chilly weather.

The ribbed construction ensures a comfortable fit as it shapes to the body's contours, which is helpful for layering under other clothes without feeling too bulky. Additionally, the mid-rise and pull-on closure style make them easy to wear and maintain with machine washing instructions. A notable feature is the variety of color options, including white, blue, charcoal, and black, allowing for some personalization in choice.

However, some users might find the material blend less breathable compared to options made with a higher cotton percentage or specialized fabrics designed for moisture-wicking and odor resistance. Despite that, the price point and the convenience of getting two pairs in one pack can make these thermal trousers an appealing option for many men needing reliable warmth during colder seasons.