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- REI Co-opMidweight Long-Sleeve Base Layer Top - Men'sTop Rated$54.95
- REI Co-opMidweight Long-Sleeve Base Layer Top - Women's$38.39 - $54.95
- REI Co-opMidweight Base Layer Bottoms - Men's$54.95
- REI Co-opMidweight Base Layer Tights - Women's$54.95
- REI Co-opMerino 185 Long-Sleeve Base Layer Top - Men'sTop Rated$79.95
- REI Co-opMidweight Base Layer Bottoms - Kids'Top Rated$34.95
- REI Co-opMerino 185 Base Layer Bottoms - Men's$79.95
- SmartwoolClassic Thermal Merino Base Layer Bottoms - Women's$115.00
- SmartwoolClassic Thermal Merino Crew Base Layer Top - Women'sTop Rated$56.83 - $115.00
- SmartwoolClassic Thermal Merino Base Layer Bottoms - Men'sTop Rated$115.00
- tasc PerformanceElevation Merino Base Layer Bottoms - Men's$34.73 - $54.73Save 30% - 56%compared to  $79.00Save up to 30% extra on your REI Outlet purchase, thru 12/16.REI OUTLET
- REI Co-opMidweight Base Layer Crew Top - Kids'Top Rated$34.95
- REI Co-opMerino 185 Base Layer Bottoms - Women's$79.95
- tasc PerformanceElevation Merino Base Layer Bottoms - Women's$54.73Save 30%compared to  $79.00Save up to 30% extra on your REI Outlet purchase, thru 12/16.REI OUTLET
- REI Co-opLightweight Long-Sleeve Crew Base Layer Top - Men'sTop Rated$27.93 - $39.95
- REI Co-opMidweight Base Layer Half-Zip Top - Women's$41.89 - $59.95
- REI Co-opMerino 185 Long-Sleeve Base Layer Top - Women's$79.95
- SmartwoolClassic All-Season Merino Long-Sleeve Base Layer Top - Men'sTop Rated$90.00
- SmartwoolClassic Thermal Merino Crew Base Layer Top - Men'sTop Rated$115.00
- PatagoniaCapilene Midweight Crew Base Layer Top - Men'sTop Rated$89.00
- REI Co-opMidweight Base Layer Half-Zip Top - Men'sTop Rated$59.95
- tasc PerformanceElevation Merino T-Shirt - Men's$54.73Save 30%compared to  $79.00Save up to 30% extra on your REI Outlet purchase, thru 12/16.REI OUTLET
- REI Co-opHeavyweight Merino Base Layer Bottoms - Men'sTop Rated$99.95
- REI Co-opLightweight Long-Sleeve Crew Base Layer Top - Women'sTop Rated$27.93 - $39.95
- PatagoniaCapilene Midweight Base Layer Bottoms - Men'sTop Rated$89.00
- REI Co-opLightweight Base Layer Bottoms - Men'sTop Rated$39.95
- SmartwoolClassic Thermal Merino Quarter-Zip Base Layer Top - Women'sTop Rated$120.00
- Arc'teryxKyanite Base Layer Bottoms - Women'sTop Rated$96.73Save 19%compared to  $120.00Save up to 30% extra on your REI Outlet purchase, thru 12/16.REI OUTLET
- REI Co-opHeavyweight Merino Base Layer Bottoms - Women'sTop Rated$99.95
- REI Co-opHeavyweight Merino Long-Sleeve Base Layer Crew Top - Men's$99.95
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