Base Layer Bottoms

Smartwool updated their Men's Merino 250 Base Layer Bottom to bring you a better fitting, more functional tight. The technical benefits of 100% Merino wool will help you keep your game at a high level for longer. And our heaviest weight wool fabric will help keep you warm and comfortable as you ski, run, and hike the day away.

The 230 COMPETITION SHORT PANTS for men helps you deliver top sporting performance with a whole new look – whether you’re on a ski tour, freeriding, or on a high alpine tour. The 230 MERINO COMPETITION line is produced using a seamless circular knitting technique so that when the weather gets cold and the going gets tough, every area of the body is covered by the right thickness of merino wool. The basic ribbed structure consists of 190 g/m² merino, giving the functional shirt elasticity for maximum freedom of movement. A particularly breathable mesh structure is used in heat spots, while 240 g/m² wool warms areas that are sensitive to the cold, such as the kidneys. This body-mapping principle allows for a close fit while providing maximum ventilation. At just 16.5 microns in diameter, the delicate merino fibers feel pleasantly soft against the skin and at the same time make the functional shirt quick-drying and very durable. The new color gradient from light to dark is created by knitting in mottled yarn and gives the functional shirt a special pattern thanks to the body-mapping structure. This puts the 230 COMPETITION SHORT PANTS for men out in front when it comes to looks, too!

Made with a special two-layer soft jersey knit, Pepper Bi-Ply's long underwear is sure to keep you warm when you need it most. The unique double layer construction traps warm air between the two layers for excellent thermal retention. These women's thermal long johns are knit with MTF soft spun polyester fibers that transport moisture away from the skin to keep you warm, dry and comfortable. These midweight base layer pants are a tried-and-true favorite choice for comfort while protecting against the cold.

Made with a special two-layer soft jersey knit, these thermal base layer pants are sure to keep you warm when you need it most. The unique double layer construction of these men's long john pants traps warm air between the two layers for excellent thermal retention, while the special Chillys seasonings provide additional moisture management to wick away the damp, keeping you dry. Pepper Bi-Ply is a tried-and-true favorite choice for comfort while protecting against the cold. Fit Tip: These thermal base layer pants are a relaxed fit product that work well under regular pants and jeans. These warm thermal pants also have a front fly.

Your go-to for classic base layer, Micro-Elite Chamois is synonymous with the Hot Chillys brand. The descendant of the first technical baselayer created in 1984, ME Chamois has developed a reputation for being the most reliable, durable baselayer made by our company. The secret to the success of Hot Chillys long underwear for women lies in the fabric's intimate blend of enhanced polyester and spandex fibers. These long women's thermal underwear bottoms are a highly technical, high-performing piece of thermal underwear that'll keep you warm for years to come. Fit Tip - This piece of Hot Chillys long underwear bottoms feature a snug, body fitting silhouette for exceptional moisture management. If you are in-between sizes - order up one size for these women's thermal underwear bottoms.

Hot Chillys best selling base layer Micro-Elite Chamois is now available in Youth sizes! Made with a smooth face for easy layering, and a soft fuzzy interior for extra warmth without adding bulk. The perfect thermal under layer to keep kids warm, dry and comfortable so they can have fun.

These children's thermal pants are made with two layers of fabric connected back to back with open spaces between the layers to trap and hold warm air. These kids' long underwear pants are knitted with MTF soft spun polyester fibers that transport moisture away from the skin to keep you warm, dry and comfortable. Pepper Bi-Ply is a tried-and-true favorite choice for soft, comfy children's thermal pants while protecting against the cold.