Merino Wool Men's Base Layer Tops
(54 products)- REI Co-opHeavyweight Merino Long-Sleeve Base Layer Crew Top - Men's$69.93 - $99.95Underwear Weight:HeavyweightSize Type:Regular, Big, Tall
- SmartwoolClassic Thermal Merino Crew Base Layer Top - Men'sTop Rated$125.00Underwear Weight:MidweightSize Type:Regular, Big
- SmartwoolClassic All-Season Merino Long-Sleeve Base Layer Top - Men'sTop Rated$66.93 - $100.00Underwear Weight:LightweightSize Type:Regular, Big
- REI Co-opMerino 185 Long-Sleeve Base Layer Top - Men'sTop Rated$79.95Underwear Weight:LightweightSize Type:Regular, Big
- IcebreakerMerino 200 Oasis Long-Sleeve Crewe Thermal Top - Men'sTop Rated$69.93 - $120.00Underwear Weight:MidweightSize Type:Regular, Big
- REI Co-opHeavyweight Merino Base Layer Half-Zip Top - Men's$72.93 - $104.95Underwear Weight:HeavyweightSize Type:Regular, Big, Tall
- REI Co-opMerino 185 Long-Sleeve Half-Zip Base Layer Top - Men'sTop Rated$62.93 - $89.95Underwear Weight:LightweightSize Type:Regular, Big
- SmartwoolClassic Thermal Merino Quarter-Zip Base Layer Top - Men'sTop Rated$130.00Underwear Weight:MidweightSize Type:Regular, Big
- IcebreakerMerino 260 Tech Long-Sleeve Crewe Thermal Top - Men'sTop Rated$89.93 - $140.00Underwear Weight:HeavyweightSize Type:Regular, Big
- tasc PerformanceElevation Merino T-Shirt - Men's$34.73 - $54.73Save 30% - 56%compared to  $79.00Underwear Weight:LightweightSize Type:Big, RegularREI OUTLET
- Arc'teryxRho Merino Wool Crew Neck Base Layer Top - Men'sTop Rated$120.00Underwear Weight:MidweightSize Type:Regular, Big
- Icebreaker200 Oasis Long-Sleeve Half-Zip Base Layer Top - Men'sTop Rated$79.93 - $130.00Underwear Weight:MidweightSize Type:Regular, Big
- REI Co-opMerino 185 Base Layer Top - Men's$69.95Underwear Weight:LightweightSize Type:Regular, Big
- SmartwoolIntraknit Thermal Merino Crew Base Layer Top - Men's$92.73Save 28%compared to  $130.00Underwear Weight:MidweightSize Type:Regular, BigREI OUTLET
- SmartwoolClassic All-Season Merino Quarter-Zip Base Layer Top - Men'sTop Rated$105.00Underwear Weight:MidweightSize Type:Regular, Big
- SmartwoolClassic All-Season Merino T-Shirt - Men's$95.00Underwear Weight:LightweightSize Type:Regular, Big
- IcebreakerMerino 200 ZoneKnit Long-Sleeve Half-Zip Base Layer Top - Men'sTop Rated$119.73Save 25%compared to  $160.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- SmartwoolIntraknit Thermal Merino Crew Base Layer Top - Men's$150.00Underwear Weight:MidweightSize Type:Regular, Big
- IcebreakerMerino 260 Tech Long-Sleeve Half-Zip Base Layer Top - Men's$135.00 - $150.00Underwear Weight:MidweightSize Type:Regular, Big
- SmartwoolIntraknit Thermal Merino Base Layer Quarter-Zip Top - Men'sTop Rated$140.00Underwear Weight:MidweightSize Type:Regular, Big
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Terms apply- IcebreakerMerino 125 ZoneKnit Long-Sleeve Half-Zip Base Layer Top - Men'sTop Rated$99.73Save 26%compared to  $135.00Underwear Weight:LightweightSize Type:Regular, BigREI OUTLET
- REI Co-opMerino 185 Long-Sleeve Half-Zip Base Layer Top - Men's Tall SizesTop Rated$89.95Underwear Weight:LightweightSize Type:Tall, Big
- StioBasis PeakWool Midweight Half-Zip Base Layer Top - Men'sTop Rated$159.00Underwear Weight:MidweightSize Type:Regular, Big
- IcebreakerMerino 200 Sonebula Long-Sleeve Crewe Base Layer Top - Men'sTop Rated$89.73Save 25%compared to  $120.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- Icebreaker200 Oasis Crewe Base Layer Top - Men's$110.00Underwear Weight:MidweightSize Type:Regular, Big
- SmartwoolIntraknit Thermal Merino Base Layer Colorblock Crew - Men's$96.73Save 25%compared to  $130.00Underwear Weight:MidweightSize Type:Regular, BigREI OUTLET
- SmartwoolIntraknit Thermal Merino Colorblock Crew Base Layer Top - Men's$130.00Underwear Weight:LightweightSize Type:Regular, Big
- SmartwoolIntraknit AS Merino Base Layer Crew Top - Men'sNew arrival$125.00Underwear Weight:MidweightSize Type:Regular, Big
- Arc'teryxRho Merino Wool Zip-Neck Base Layer Top - Men's$140.00Underwear Weight:MidweightSize Type:Regular, Big
- SmartwoolIntraknit Thermal Max Merino Quarter-Zip Base Layer Top - Men's$155.00Underwear Weight:MidweightSize Type:Regular, Big





















































































































