Seirus Heatwave Base Layer Lite

Seirus’ line of base layer tops and bottoms is made with heat-reflective technology designed to send escaped body heat back to the body so you can retain warmth in the chilliest conditions.

The brand says its Max-Wick brushing provides increased moisture wicking and ventilation throughout these reversible base layers. The design incorporates four-way stretch and raglan sleeves for flexibility. Tops and bottoms are available in both men’s and women’s.