The N-Ferno 6481 Lightweight Base Layer Pants are designed for comfortable warmth in mild to cold conditions. Made with lightweight and breathable stretch fabric, they are a great base layer bottom for keeping workers warm without overheating during strenuous activity. The 180g polyester-spandex performance material provides warmth without the constricting or bulky feel often found with heavyweight base layers. The fabric is smooth and stretchable for easily layering under work pants and bibs, plus an elastic waistband for a secure and comfortable fit. Unlike other base layers, these pants are designed to sit slightly looser on the skin to enhance breathability and provide an air gap for added insulation. Featuring moisture-wicking technology, anti-odor treatment and a breathable mesh fly front to keep workers comfortably fresh, dry and warm all-day. Flatlock seams and a tag less interior means no irritation and chafing. These base layer bottoms are ideal for those working in construction, transportation, warehousing, refrigerated areas and more. Can also be worn for-weekend activities such as hunting, climbing, running, cycling and skating. To complete the set, pair with the N-Ferno 6436 Lightweight Base Layer Shirt (sold separately). For heavier duty warmth in cold temperatures, the N-Ferno 6435 Midweight Base Layer Shirt and 6480 Midweight Base Layer Pants are also available. Size: 3X Large. Color: Black. Gender: male. Age Group: adult.