Men's leggings: thermal and sports base layers

A men's leggings is worn as a base layer, beneath trousers or sports shorts, and not as a visible item. Its purpose is thermal or sporty: to retain warmth in extreme cold or to support the muscle and wick away sweat during activity. This is what sharply distinguishes the men's leggings from women's leggings, which are chosen based on opacity and appearance.

Thermal men's leggings as a base layer

Worn under work trousers, jeans, or ski pants, the thermal men's leggings add an insulating layer without visible bulk. There are two main types. Synthetic fabrics, often brushed on the inside, are the warmest at a reasonable price and dry quickly. Merino wool, which is more expensive, regulates temperature better in both directions and limits odours over several days of wear, which is important in the mountains or when travelling.

Men's sport leggings and compression

In running, cycling, or winter sports, the men's sport leggings meet three requirements: wick away sweat, prevent chafing in the groin area, and sometimes provide light compression on the thighs and calves. This compression does not dramatically improve performance but reduces muscle vibrations and the feeling of fatigue during long efforts. Look for flat seams and a wide waistband, the two usual friction points.

Should you wear underwear under leggings?

On sport leggings with an integrated liner in the groin area, no: the liner replaces underwear, and adding a layer creates unnecessary seams that cause chafing. On a simple thermal legging worn as a base layer under trousers, yes, a boxer brief underneath is preferable for hygiene and comfort. This is the most common question about this item.