These are the best base layers around. Skip to main content. Menu ... Possibly the coolest feature of this one-piece is that it offers easy access without compromising its heat-trapping properties.

Honorable Mention: One self-described “smelly sweater” who climbed, skied, and slept in Smartwool’s Merino 250 base layer one-piece ($225) loved its warmth, breathability, and odor ...

Many people acquire their outdoor apparel one piece at a time. A ski shell here, a puffy jacket there. Base layers received as Christmas gifts. A fleece owned since high school. Then when it's ...

Start any fall outfit off right with these base layers. ... From there, I'm able to build my entire look around this one piece. And what's even better, ...

Tested by Adam Binnie for six months and 1,000 miles "If you wear a one-piece leather suit, you need a one-piece base layer - it's so much easier to get your suit on over the top, and there's no ...