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- SmartwoolIntraknit Thermal Max Merino Base Layer Pattern Hoodie - Women's$114.73Save 30%compared to  $165.00Size Type:RegularREI OUTLET
- PatagoniaCapilene Thermal Weight Zip-Neck Top - Men's$109.00 - $115.00Underwear Weight:HeavyweightSize Type:Regular, Big
- Kari TraaSilja Half-Zip 2.0 Base Layer Top - Women's$83.93Save 30%compared to  $120.00Underwear Weight:HeavyweightSize Type:Regular
- Arc'teryxRho Boot Cut Base Layer Bottoms - Women's$72.73Save 19%compared to  $90.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- PatagoniaCapilene Midweight Zip-Neck Base Layer Top - Women's$99.00Underwear Weight:MidweightSize Type:Regular
- Kari TraaSilja 2.0 Base Layer Pants - Women's$76.93Save 30%compared to  $110.00Underwear Weight:HeavyweightSize Type:Regular
- SmartwoolIntraknit AS Merino Base Layer Crew Top - Men'sNew arrival$125.00Underwear Weight:MidweightSize Type:Regular, Big
- SmartwoolIntraknit AS Merino Base Layer Crew Top - Women'sNew arrival$125.00Underwear Weight:MidweightSize Type:Regular
- PatagoniaCapilene Thermal Weight Long Underwear Crew Top - Men's$99.00Underwear Weight:HeavyweightSize Type:Regular, Big
- Kari TraaSval Base Layer Pants - Women's$49.73Save 28%compared to  $70.00Underwear Weight:LightweightSize Type:RegularREI OUTLET
- Kari TraaSmekker Half-Zip Base Layer Top - Women's$89.73Save 30%compared to  $130.00Underwear Weight:LightweightSize Type:RegularREI OUTLET
- SmartwoolThermal Merino Base Layer Hoodie - Men's$145.00Underwear Weight:MidweightSize Type:Regular
- SmartwoolClassic Thermal Merino Base Layer Bottoms - Kids'$47.93 - $65.00Underwear Weight:MidweightSize Type:Regular
- SmartwoolIntraknit Thermal Merino Base Layer Hoodie - Men's$180.00Underwear Weight:MidweightSize Type:Regular
- REI Co-opMerino 185 Base Layer Top - Women's$69.95Underwear Weight:LightweightSize Type:Regular
- SmartwoolClassic Thermal Merino Crew Base Layer Top - Kids'$47.93 - $65.00Underwear Weight:MidweightSize Type:Regular
- REI Co-opMidweight Base Layer Bottoms - Toddlers'Top Rated$24.95Underwear Weight:MidweightSize Type:Regular
- PatagoniaCapilene Thermal Weight Long Underwear Bottoms - Women's$68.93 - $99.00Underwear Weight:HeavyweightSize Type:Regular
- SENIQWool Sculpt Merino Base Layer Leggings - Women's$128.00Underwear Weight:HeavyweightSize Type:Regular
- Terramar2.0 Cloud Nine Half-Zip Base Layer Top - Women's$34.73Save 30%compared to  $50.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- Arc'teryxRho Hybrid Insulated Base Layer Bottoms - Women's$145.73Save 19%compared to  $180.00Underwear Weight:HeavyweightSize Type:RegularREI OUTLET
- Arc'teryxRho Insulated 3/4 Base Layer Bottoms - Men'sTop Rated$159.73Save 20%compared to  $200.00Underwear Weight:HeavyweightSize Type:Regular, BigREI OUTLET
- StioBasis PeakWool Midweight Half-Zip Base Layer Top - Men'sTop Rated$110.93Save 30%compared to  $159.00Underwear Weight:MidweightSize Type:Regular, Big
- Wild RyeJane Leggings - Women's$52.73Save 51%compared to  $109.00Underwear Weight:LightweightSize Type:RegularREI OUTLET
- SmartwoolIntraknit Thermal Max Merino Quarter-Zip Base Layer Top - Men's$155.00Underwear Weight:MidweightSize Type:Regular, Big
- Arc'teryxRho Hybrid Insulated Base Layer Bottoms - Women'sTop Rated$180.00Underwear Weight:HeavyweightSize Type:Regular
- SmartwoolClassic Thermal Merino Lettuce Edge Base Layer Bottoms - Women's$82.73Save 28%compared to  $115.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- Helly HansenHH Durawool Base Layer T-Shirt - Women's$56.73Save 29%compared to  $80.00Underwear Weight:LightweightSize Type:RegularREI OUTLET
- Helly HansenLIFA Merino Midweight Balaclava Base Layer Hoodie - Women's$104.73Save 30%compared to  $150.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- Terramar3.0 Thermawool Half-Zip Base Layer Top - Women's$47.73Save 36%compared to  $75.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
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