Hot Chillys have long been a go-to brand for snow lovers, men, women, and kids. I love that the come in lightweight, mid weight and mountain weight. The are all breathable. The light-weight ones are great to layer and come in crew neck and turtleneck (starting at $50) The mountain weight offer better breathability, odor protection and a comfortable fit (starting at $85) The midweight series are a good base layer to add extra warmth and breathability. I also like the colors and patterns!

In 1985 Hot Chillys manufactured our first wool blend base layer and revolutionized the 80’s under-ski-wear market. 

Hot Chillys Women's base layer
Hot Chillys Women’s base layer

Clima-Wool features a blend of merino wool, nylon and spandex to keep you warm, moisture transfer fibers to move moisture, and nylon to make sure you stay dry. These also offer UPF 30 protection ( $120).

Bottoms also come in different weights.

Women's Merino 260 Quantum Long Sleeve Zip Jacket
Women’s Merino 260 Quantum Long Sleeve Zip Jacket

Another good bet is Icebreaker that makes everything—tops, bottoms, underwear, socks for adults and kids alike out of Merino wool which helps regulate temperature and moisture and is naturally odor-resistant. I wore the tops and bottoms in the Arctic and was completely comfortable. The thermos-regulation properties of the wool adapt to your body, so you stay warm in the cold and cool in the heat. And unlike other wool, it’s not bulky or itchy and can be machine washed. The company pioneered the first system of natural fiber performance layer. In the Arctic, I wore the women’s Merino 2600 Quantum Long Sleeve Zip Jacket every day ($200). It packed a lot of warmth though not a lot of bulk and was great for layering. I also loved the pocket!

Icebreaker recently released the women’s 260 ZoneKnit Seamless Collection in a sports bra, legging, short and onesie. For fall and winter, the 260 ZoneKnit Seamless Base Layers are launching for men and women.They are made of 38% merino wool, 38% TENCEL Lyocell, 18% nylon and 6% bio-based elastane. So, you get all the stretch of a regular legging, with the benefits of merino wool (thermoregulating, moisture wicking, odor resistant).