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Makalu Polarec ZT Base Layer Top
(Inclusive of all taxes)
K2 Base Layer Thermals Bottoms
(Inclusive of all taxes)
K2 Base Layer Thermals Top
(Inclusive of all taxes)
Makalu Polarec ZT Base Layer Bottom
(Inclusive of all taxes)
K2 Base Layer Thermals Bottoms - Women
(Inclusive of all taxes)
Makalu Polartec ZT Cold-Weather Base Layer Top – Women
(Inclusive of all taxes)
K2 Base Layer Thermals Top - Women
(Inclusive of all taxes)
Makalu Polarec ZT Base Layer Bottom - Women
(Inclusive of all taxes)
Zermatt Polarec XT Base Layer Bottom
(Inclusive of all taxes)
Zermatt Polarec XT Base Layer Top - Women
(Inclusive of all taxes)
Zermatt Polarec XT Base Layer Top
(Inclusive of all taxes)
Zermatt Polarec XT Base Layer Bottom - Women
(Inclusive of all taxes)
Shop Gokyo thermal base layers for trekking, hiking, winter travel and high-altitude adventures. This collection brings together men’s and women’s thermal tops and bottoms designed to be worn as the first layer in a cold-weather clothing system.
Base Layers for Himalayan Trekking
During active trekking, the layer closest to your skin needs to balance warmth with moisture management. Thermal base layers help create a more comfortable foundation beneath fleece, insulated jackets and protective outer shells.
Choose Thermal Wear by Conditions
Select the warmth level according to the destination, season, altitude, expected temperature and activity. Lighter thermals can suit cool-weather travel and active winter use, while warmer brushed constructions are better suited to colder conditions and lower activity periods.
Complete Cold-Weather Layering
Pair thermal tops and bottoms with suitable trekking clothing, fleece and outer insulation. For mountain trips, plan the complete system rather than judging warmth from a single garment alone.




















