first layer & mid layer

Casual base layer with Hot Chillys Geo-Pro fabric so you can look and feel as if you're in a T-shirt while enjoying the full technical superiority you expect from Hot Chillys. Geo-Pro features MTF polyester yarns that keep you dry without chafin, UPF...

The coldest days call for the smartest gear. The Mid 250 Bottom fits the bill with Smartwool's warmest weight fabric, a covered elastic waistband, and flatlock seam construction to keep you comfortable from first tracks to last chair. 100% Merino...

Smartwool's best selling, and warmest baselayer just got a little more refined with an improved fit, chafe-free seam construction, and panels that offer more comfort with a pack. 100% Merino Wool Slim Fit Interlock Knit Crew Neck with Set-In...

The original Pepper in the Hot Chillys Peppers Collection, Pepper Skins are your standard, dependable thermals. Originally designed with the working professional in mind as a warm baselayer, this fabric features their staple MTF polyester fibers, which...

The original Pepper in the Hot Chillys Peppers Collection, Pepper Skins are your standard, dependable thermals. Originally designed with the working professional in mind as a warm baselayer, this fabric features their staple MTF polyester fibers, which...

Smartwool's best selling, and warmest baselayer just got a little more refined with an improved fit, chafe-free seam construction, and panels that offer more comfort with a pack. 100% Merino Wool Slim Fit Interlock Knit 8" (20 cm) Center Front...

Made from Smartwool's warmest baselayer fabric, these bottoms will keep you warm even on the coldest summits. Features a covered elastic waistband, flatlock seam construction and a midrise waist. 100% Merino Wool Slim Fit; Natural Rise Interlock...

Your go-to for a 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...

Your go-to for a 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...

Peter Piper picked a peck of pickled peaches?! That's right, Hot Chillys isn't all about peppers! Taking their name from the lightly sueded peached finish that leaves wearers feeling soft and pampered, PeachSkins provide a good degree of warmth,...

Peter Piper picked a peck of pickled peaches?! That's right, Hot Chillys isn't all about peppers! Taking their name from the lightly sueded peached finish that leaves wearers feeling soft and pampered, PeachSkins provide a good degree of warmth,...

The original Pepper in the Hot Chillys Peppers Collection, Pepper Skins are your standard, dependable thermals. Originally designed with the working professional in mind as a warm baselayer, this fabric features their staple MTF polyester fibers, which...

The original Pepper in the Hot Chillys Peppers Collection, Pepper Skins are your standard, dependable thermals. Originally designed with the working professional in mind as a warm baselayer, this fabric features their staple MTF polyester fibers, which...

The original Pepper in the Hot Chillys Peppers Collection, Pepper Skins are your standard, dependable thermals. Originally designed with the working professional in mind as a warm baselayer, this fabric features our staple MTF polyester fibers, which...

The original Pepper in the Hot Chillys Peppers Collection, Pepper Skins are your standard, dependable thermals. Originally designed with the working professional in mind as a warm baselayer, this fabric features their staple MTF polyester fibers, which...