Base layers
- (24)Arc'teryx Rho Base Layer Hoody - Women's$140.00
- (1)MEC T2 Merino Base Layer 1/4 Zip Long Sleeve Top - Women's$83.94$119.95
- (8)Arc'teryx Rho LT Base Layer Bottoms - Men's$120.00
- (5)Arc'teryx Rho Base Layer Bottoms - Women's$120.00
- (2)MEC T3 Warmest Base Layer 1/4 Zip Long Sleeve Top - Women's$44.94$89.95
- (5)MEC T2 Merino Base Layer Bottoms - Men's$76.94$109.95
- (774)Smartwool Classic Thermal Merino Base Layer Crew - Women's$139.95
- (8)MEC T2 Merino Base Layer Long Sleeve Top - Men's$76.94$109.95
- (0)Smartwool Classic All-Season Merino Base Layer Crew - Women's$119.95
- (496)Smartwool Classic Thermal Merino Base Layer Bottom - Women's$139.95
- (416)Smartwool Classic Thermal Merino Base Layer Bottoms - Men's$139.95
- (6)Smartwool Classic Thermal Merino Base Layer Crew - Men's$139.95
- (0)Smartwool IntraKnit All-Season Merino Baselayer Bottom - Women's$154.95
- (3)Fjallraven Abisko Lite Fleece Half Zip - Women's$164.95
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How to choose base layers
Learn about thermal warmth rating systems, merino vs. synthetic and more.
- (6)Fjallraven Abisko Wool Hoodie - Men's$174.95
- (73)icebreaker 200 Oasis Leggings - Women's$129.95
- (1)Kari Traa Smekker High Waist Pants - Women's$111.94$159.95
- (2)Kari Traa Silja 2.0 Half Zip - Women's$104.94$149.95
- (140)icebreaker Merino 200 Oasis LS Crewe Thermal Top - Men's$129.95
- (63)icebreaker Merino 260 Tech Long Sleeve Crewe - Men's$149.95
- (4)Kari Traa Rose High Waist Pants - Women's$104.94$149.95
- (0)Smartwool Intraknit All-Season Merino Baselayer Long Sleeve - Women's$164.95
- (0)Smartwool Intraknit Thermal Merino Base Layer Crew - Men's$159.95
- (1)Patagonia Capilene Midweight Long Sleeve Crew - Women's$109.00
- (4)Kari Traa Rose Long Sleeve Top - Women's$104.94$149.95
- (0)Smartwool Intraknit Active Bottom - Men's$139.95
- (5)Kari Traa Rose Half Zip Top - Women's$111.94$159.95
- (0)Kari Traa Smekker Half-Zip Baselayer Top - Women's$118.94$169.95
- (1)Patagonia Capilene Midweight Crew - Men's$109.00
- (2)icebreaker 125 ZoneKnit Leggings - Men's$104.94$149.95
- (0)Kari Traa Tale Half-Zip - Women's$104.94$149.95
- (0)Smartwool Intraknit Thermal Merino Base Layer Colorblock Crew - Men's$169.95
- (0)Smartwool Classic Thermal Merino Base Layer 3/4 Bottom - Men's$124.95
- (1)Smartwool Intraknit Thermal Merino Base Layer Bottoms - Women's$149.95
- (0)Kari Traa Smekker Baselayer Bottoms - Women's$104.94$149.95
- (3)Kari Traa Smekker Long Sleeve Crew - Women's$159.95
- (0)icebreaker Merino 200 Oasis+ Long Sleeve Crew - Men's$107.94$154.95
- (1)Smartwool Classic Thermal Merino Base Layer 1/4 Zip - Women's$149.95
- (1)Kari Traa Rose Hood - Women's$118.94$169.95
- (0)Smartwool Intraknit Thermal Merino Base Layer Crew - Women's$159.95
- (2)Smartwool Classic All-Season Merino Base Layer Bottoms - Women's$114.95
- (62)icebreaker Merino 260 Tech Long Sleeve Half Zip - Women's$159.95
- (6)Arc'teryx Rho Crew Neck Long Sleeve Base Layer - Women's$120.00
- (0)Patagonia Capilene Midweight Bottoms - Men's$109.00
- (40)Arc'teryx Rho Merino Wool Crew Neck - Men's$140.00
- (0)Smartwool Intraknit Thermal Merino Base Layer 3/4 Bottom - Men's$149.95
- (0)Smartwool Intraknit Thermal Merino Base Layer Hoodie - Men's$209.95
- (0)Smartwool Classic Thermal Merino Base Layer 1/4 Zip - Men's$149.95
- (1)Smartwool Classic All-Season Merino Base Layer Long Sleeve - Men's$129.95
- (0)Patagonia Capilene Cool Merino Blend Graphic Long Sleeve Shirt - Men's$109.00
- (0)Patagonia Capilene Midweight Bottoms - Women's$109.00
- (3)Patagonia Capilene Midweight Zip Neck - Women's$125.00
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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.



















































