Depending on external conditions, the TUNDRA L2 top and pant can be worn as a second layer or the only base layer. Key areas are double layered for enhanced wind resistance. Anti-microbial, Scent-Stop, and moisture management technology provide odor control in an undergarment style top and pant. Dri-Power, Russell's moisture management technology wicks moisture away from the skin. Flatlock stitching reduces bulk along seam lines creating a chafe-free garment.

* Wind control panels—covers body core to protect from wind exposure
* Grid pattern in fleece traps body heat to maintain warmth
* Thermal control
* Underarm panels provide ventilation and wicking
* No side seams
* Anti-microbial