Factor 1 Mens Base Layer Leggings are one of the best lightweight thermal underwear ranges for general outdoor use.

Manufactured from stretchy tubular 100% polyamide ribbed fabric, these leggings have a hydrophilic treatment impregnated in to the yarn during the finishing process for superior moisture management.

The design features an extra generous waist height to help prevent lower back exposure during activities, as well as giving further thermal protection to your kidneys. Construction of the low profile waist incorporates a strong rubber elastic core that is seamed over with Factor 1 fabric. At the front there is a double fabric fly opening that provides extra thermal protection, which is especially useful in low temperature conditions. 

These base layers cross over in to anything from, skiing, through to hiking and camping, and can be used in combination with Sub Zeros for extra warmth in extreme conditions.

Please note: These are end of line garments. There may be some slight colour variations where they have been folded, and some may have different versions of our logo, but apart from this these base layers are perfect. We have greatly reduced the price to reflect this.

Scroll down the page for further product details, technical information, sizing, shipping and any washing instructions.