November 06, 2022
By Rob Neumann
Description and Application—When it comes to dressing for the winter season, a good base layer is critical for maintaining warmth and comfort, whether it’s used as a stand-alone garment or as part of a technical layering system. Zerofit offers performance technical base-layer options. Starting with their flagship product, the Ultimate Base Layer is instantly warm when you put it on, creating frictional heat generated by extra-long fibers that gently rub against your skin, rather than generating heat through compression like other base layers, which can have fits that are uncomfortably tight.
Tested at the Boken Institute in Japan, the Ultimate was rated to be five times warmer than competing base layers. It was designed to work best in a temperature range of between 14°F to 50°F, so it also wears well as a stand-alone garment for activities in cool temperatures that don’t require mid- and outer layers. Also check the Heatrub Ultimate Leggings for lower body warmth.
The Heatrub Move, a lighter option built for a temperature range between 23°F and 54°F, is twice as warm as its closest competitor based on company testing. It features a 45% polypropylene construction on the inside and a hollow polyester shell that combine to regulate body temperature so that as you work harder for longer, you don’t overheat. The construction removes sweat from the skin and evaporates it off the surface of the garment quickly, reducing cold sweat on the body after physical activity.
Staff Perspective: If you are looking for a high-performance set of base layers that are comfortable, not too tight, and suitable over a range of temperatures, check out the Zerofit Ultimate and Move. These base layers are warm, and between the two available weights, you’ll have a solid foundation for a cool- to cold-weather clothing system. At the right temperature range, they wear well as stand-alone garments, and they look sharp. The mock neck is a good addition for added warmth around your neck, and the not-too-tight fit allows freedom of movement.
Cost: Heatrub Ultimate: $90; Heatrub Ultimate Leggings: $90; Heatrub Move: $76