A base layer top featuring a half or quarter zip to let out heat as needed is ideal to have on hand when you need it most. Especially if you’re hitting the slopes or partaking in some other outdoor activity and want to stay warm. A good one should fit comfortably underneath a sweatshirt or sweater and a big jacket without making you feel overheated and sweaty. With that in mind, we selected a few of the best zip-up base layer tops made with moisture-wicking materials to keep you dry and smelling fresh.
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1. Smartwool Base Layer Top
This option features 250 grams of merino wool fabric made with an interlock knit for enhanced comfort, breathability, thermoregulation and odor resistance.
Pros: Flatlock seam construction minimizes chafing. It comes in eight colorways and five sizes.
Cons: Some wearers may find the sleeves a little long.
2. Minus33 Merino Wool Base Layer
This top was also made with 230 grams of soft, lightweight naturally insulating merino wool, interlock knit construction and flatlock seams.
Pros: The fabric is also fire resistant and has a UPF rating of 50+. It comes in 10 colors and 10 sizes including camo and tall options.
3. Columbia Base Layer
The top contains 85% polyester and 15% elastane with an Omni-Heat thermal reflective lining that holds heat.
Pros: Ergonomic, flatlock seams and 4-way construction improves comfort.