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Base Layer Tops: Deals
(137 products)Products (137)
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- HalfdaysJohnson Base Layer Top - Women's$65.93Save 30%compared to  $95.00Underwear Weight:UltralightweightSize Type:Regular
- tasc PerformanceElevation Merino T-Shirt - Men's$34.73 - $54.73Save 30% - 56%compared to  $79.00Underwear Weight:LightweightSize Type:Regular, BigREI OUTLET
- Kari TraaFryd Base Layer Top - Women's$31.83 - $60.00Underwear Weight:MidweightSize Type:Regular
- SmartwoolIntraknit Thermal Merino Colorblock Quarter-Zip Base Layer Top - Women's$89.93 - $140.00Underwear Weight:MidweightSize Type:Regular
- PatagoniaCapilene Midweight Zip-Neck Long Underwear Top - Men's$63.73Save 35%compared to  $99.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- PatagoniaCapilene Midweight Zip-Neck Base Layer Top - Women's$49.83 - $99.00Underwear Weight:MidweightSize Type:Regular
- tasc PerformanceElevation Merino T-Shirt - Women's$54.73Save 30%compared to  $79.00Underwear Weight:LightweightSize Type:Regular, PlusREI OUTLET
- PatagoniaCapilene Midweight Zip-Neck Base Layer Top - Men's$48.83 - $99.00Underwear Weight:MidweightSize Type:Regular, Big
- SmartwoolIntraknit Thermal Merino Base Layer Quarter-Zip Top - Men'sNew arrival$104.73Save 25%compared to  $140.00Underwear Weight:MidweightSize Type:Regular, BigREI OUTLET
- SmartwoolIntraknit Thermal Merino Base Layer Quarter-Zip Top - Men's$89.93 - $140.00Underwear Weight:MidweightSize Type:Regular, Big
- REI Co-opMerino 185 Long-Sleeve Base Layer Top - Women's Plus SizesTop Rated$49.93Save 37%compared to  $79.95Underwear Weight:LightweightSize Type:Plus
- SmartwoolClassic Thermal Merino Colorblock Crew Base Layer Top - Men'sNew arrival$96.73Save 25%compared to  $130.00Underwear Weight:MidweightSize Type:Regular, BigREI OUTLET
- Free CountryForce Grid Fleece Base Layer Top - Women's$34.73Save 36%compared to  $55.00Underwear Weight:LightweightSize Type:Regular, PlusREI OUTLET
- Helly HansenHH Durawool Base Layer T-Shirt - Women's$56.73Save 29%compared to  $80.00Underwear Weight:LightweightSize Type:RegularREI OUTLET
- PatagoniaCapilene Thermal Weight Zip-Neck Top - Men's$53.83 - $115.00Underwear Weight:HeavyweightSize Type:Regular
- SmartwoolIntraknit Thermal Max Merino Quarter-Zip Base Layer Top - Men'sNew arrival$115.73Save 25%compared to  $155.00Underwear Weight:HeavyweightSize Type:Regular, BigREI OUTLET
- Black DiamondSolution 150 Merino Base Layer Crew Top - Women'sTop Rated$99.73Save 26%compared to  $135.00Underwear Weight:LightweightSize Type:RegularREI OUTLET
- PatagoniaCapilene Thermal Weight Zip-Neck Base Layer Top - Women's$69.73Save 36%compared to  $109.00Underwear Weight:HeavyweightSize Type:RegularREI OUTLET
- Free CountryCloud Knit Crewneck Base Layer Top - Men's$26.73Save 33%compared to  $40.00Underwear Weight:LightweightSize Type:Big, RegularREI OUTLET
- Kari TraaEmbla Wool Long-Sleeve Base Layer Top - Women's$44.83 - $90.00Underwear Weight:UltralightweightSize Type:Regular
- HalfdaysFay Midweight Merino Base Layer Top - Women's$90.93 - $130.00Underwear Weight:MidweightSize Type:Regular
- Kari TraaSmekker Half-Zip Base Layer Top - Women's$89.73Save 30%compared to  $130.00Underwear Weight:LightweightSize Type:RegularREI OUTLET
- Arms of Andes300 Alpaca Wool Long-Sleeve Crew Base Layer Top - Men's$64.83 - $69.83Save 50%compared to  $130.00 - $140.00Underwear Weight:LightweightSize Type:Regular, Big
- PatagoniaCapilene Thermal Weight Crewneck Base Layer Top - Men's$73.73Save 25%compared to  $99.00Underwear Weight:HeavyweightSize Type:RegularREI OUTLET
- SmartwoolIntraknit Thermal Merino Crew Base Layer Top - Women's$96.73Save 25%compared to  $130.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- Kari TraaRose Light Base Layer Top - Women's$81.73Save 25%compared to  $110.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- Arms of Andes300 Lightweight Alpaca Wool Half-Zip Base Layer Top - Women's$56.83 - $66.83Save 50%compared to  $115.00 - $135.00Underwear Weight:LightweightSize Type:Regular
- SmartwoolIntraknit Thermal Merino Crew Base Layer Top - Men's$99.93 - $150.00Underwear Weight:MidweightSize Type:Regular, Big
- SmartwoolClassic Thermal Merino Colorblock Crew Base Layer Top - Women's$89.93Save 30%compared to  $130.00Underwear Weight:MidweightSize Type:Regular
- SmartwoolClassic All Season Merino Long-Sleeve Base Layer Top - Men'sTop Rated$66.73Save 25%compared to  $90.00Underwear Weight:LightweightSize Type:Regular, BigREI OUTLET
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