Wearing layers of clothing seems the ideal solution to keep our bodies warm when running in winter. But even in the coldest temperatures, our bodies still generate heat, and without a way for it to escape, sweat builds up against the skin. As sweat cools and evaporates, it accelerates heat loss, which can create dangerous conditions for our bodies. lululemon addresses this concern with its latest performance wear, the Ventscape.
This running vest simplifies cold-weather running without requiring layers underneath. Its unique construction and breathable insulation adjust to runners’ movements and effort, keeping them thermally comfortable throughout the run. Unveiled during the 2026 China International Import Expo, it features a patent-pending construction that balances insulation and ventilation.
Ventscape uses PrimaLoft ThermoPlume+ alongside strategically placed mesh panels to provide insulation from the start of the run. Then, when heat and humidity build up as runners increase their pace and effort, it sucks in air through the mesh vents and flushes out the microclimate.
This innovative performance wear promises comfortable, breathable insulation without the bulk. Its lightweight face is water-resistant, while its synthetic insulation mimics the warmth of down insulation. But it dries faster and retains heat even when wet. Meanwhile, four-way stretch side panels ensure uninhibited range of movement. This vest also features side drop-in pockets that double as hand warmers or storage for gloves or a beanie, and a secure envelope pocket for other small valuables.
Ventscape underwent 250 hours of testing and over 2,500 kilometers in Lululemon’s Product Innovation lab and outdoors by brand ambassadors, including F1 World Champion Lewis Hamilton, Ultrarunner Leah Yingling, and Olympian Nikki Hiltz. It will be available beginning Dec. 29.
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Images courtesy of lululemon
