Base layers
- (61)icebreaker Merino 260 Tech Leggings with Fly - Men's$164.95
- (5)Smartwool Classic Thermal Merino Base Layer 1/4 Zip - Women's$149.95
(0)Smartwool Classic Thermal Merino Base Layer 1/4 Zip - Women's$149.95 - (147)icebreaker Merino 200 Oasis LS Crewe Thermal Top - Men's$129.95
(0)Vuori Chilled Out Legging - Women's$140.76$175.95 - (15)Smartwool Classic Thermal Merino Base Layer Bottom - Women's$139.95
(1)Smartwool IntraKnit All-Season Merino Baselayer Bottom - Men's$154.95 - (3)icebreaker Merino Blend 75 Cool-Lite Featherlight SS Crewe - Men's$139.95
- (0)Smartwool Classic All-Season Merino Base Layer Crew - Women's$119.95
(0)Patagonia Capilene Cool Merino Blend Graphic Long Sleeve Shirt - Men's$109.00 - (10)Smartwool Classic Thermal Merino Base Layer Crew - Men's$139.95
- (20)Smartwool Classic Thermal Merino Base Layer Crew - Women's$139.95
- (5)Kari Traa Rose Half Zip Top - Women's$159.95
- (11)Fjallraven Abisko Wool Long Sleeve - Women's$109.95

Read moreHow to choose base layers
Learn about thermal warmth rating systems, merino vs. synthetic and more.
- (5)Smartwool Classic All-Season Merino Base Layer Long Sleeve - Men's$119.95
- (3)Fjallraven Abisko Lite Fleece Half Zip - Women's$164.95
- (4)Kari Traa Rose High Waist Pants - Women's$149.95
- (11)Arc'teryx Rho LT Base Layer Bottoms - Men's$130.00
(1)Kari Traa Smekker High Waist Pants - Women's$159.95 (0)Craft Active Extreme X Wind Long Sleeve - Men's$114.95 - (10)Fjallraven Abisko Tights - Women's$169.95
(1)Smartwool Intraknit All-Season Merino Baselayer Long Sleeve - Women's$164.95 - (3)Kari Traa Smekker Long Sleeve Crew - Women's$159.95
- (7)Fjallraven Abisko Wool Hoodie - Men's$174.95
(2)Smartwool Classic Thermal Merino Base Layer 3/4 Bottom - Men's$134.95 (3)Smartwool Classic All-Season Merino Base Layer Bottoms - Women's$114.95 - (6)Smartwool Classic Thermal Merino Base Layer Bottoms - Men's$139.95
(1)Smartwool Intraknit Thermal Merino Base Layer 3/4 Bottom - Men's$149.95 (0)Smartwool Intraknit Thermal Merino Base Layer 3/4 Bottoms - Women's$139.95 (0)Smartwool Intraknit Active Bottom - Men's$139.95 (1)Kari Traa Rose Hood - Women's$169.95 - (2)Smartwool IntraKnit All-Season Merino Baselayer Bottom - Women's$154.95
(0)Smartwool Intraknit All-Season Merino Baselayer Long Sleeve - Men's$164.95 (1)La Sportiva Cosmosis Legging - Women's$109.95 (0)Smartwool Intraknit Thermal Merino Base Layer Crew - Men's$159.95 (0)Kari Traa Smekker Half-Zip Baselayer Top - Women's$169.95 (1)Smartwool Classic All-Season Base Layer Bottoms - Men's$114.95 - (74)icebreaker 200 Oasis Leggings - Women's$129.95
- (6)Arc'teryx Rho Base Layer Bottoms - Women's$84.00$120.00
- (6)MEC T3 Base Layer Bottoms - Women's$63.94$89.95
- (8)MEC T3 Merino Base Layer Bottoms - Women's$59.94$119.95
- (1)MEC T2 Merino Base Layer 1/4 Zip Long Sleeve Top - Women's$59.94$119.95
(0)Kari Traa Malia Pants - Women's$69.94$99.95 - (11)MEC T2 Merino Base Layer Long Sleeve Top - Women's$54.94$109.95
(0)Patagonia Capilene Midweight Bottoms - Women's$53.94$109.00 - (7)MEC T2 Base Layer Bottoms - Men's$55.94$69.95
(0)icebreaker Merino 200 Oasis Leggings Snow Day - Youths$59.96$79.95 - (3)Patagonia Capilene Midweight Zip Neck - Women's$61.94$125.00
- (6)MEC T3 Base Layer Bottoms - Men's$63.94$89.95
- (6)MEC T3 Merino Base Layer Bottoms - Men's$59.94$119.95
(0)Rossignol Poursuite 1/2 Zip - Women's$57.98$144.95 - (2)Smartwool Classic Thermal Merino Base Layer 1/4 Zip - Men's$74.94$149.95
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Base layers for ultimate winter warmth
Base layers are the unsung heroes of outdoor adventure. Whether you’re strolling through local trails, staying cozy at home or carving turns on the slopes, base layers provide the foundation for warmth and comfort. Essential items like thermal leggings, tops, and socks ensure that you stay insulated and dry throughout the day, no matter the conditions. MEC hosts entire collections of warm base layers in-store or online, made by beloved brands like MEC Label, Smartwool, KOMBI and more.
Merino Wool vs. Synthetic Base Layers
Knowing how to choose base layers depends on your activity level and environment. Merino wool is loved for its soft texture, breathability and natural antimicrobial properties. It’s a perfect choice for activities with lower sweat levels, such as camping trips, chill hikes or downhill skiing. Merino wool regulates body temperature and resists odor, making it a reliable option.
Synthetic base layers, often made from high-performance polyester or polypropylene, excel in durability and moisture-wicking capabilities. Lightweight and quick-drying, these layers are budget-friendly and ideal for high-intensity activities like trail running, mountain biking and cross-country skiing. For those who push their limits, synthetic layers keep sweat at bay and ensure consistent comfort.
If you’re looking for the best of both worlds, hybrid merino-synthetic base layers blend the temperature regulation of wool with the durability and performance of synthetics. These versatile options are a great choice for adventurers with multiple activities on the go.
Building a layering system
Your base layer sets the stage, but it works best as part of a complete layering system. After selecting your base layer, add a mid-layer for insulation and an outer layer for protection. Mid-layers, such as fleece or insulated jackets, trap body heat while allowing moisture to escape. Outer layers, often waterproof or windproof, shield you from the elements, ensuring you’re ready for rain, snow, or brisk winds. For ever-changing weather conditions or extended adventures, mastering the art of layering is key. A well-chosen base layer not only enhances your outdoor comfort but also boosts performance by regulating temperature and managing moisture effectively. Any questions? Feel free to drop by your local MEC to meet our expert team of staffers who will be more than happy to lend their own advice.




















































