Mizuno releases its latest base-layer and leggings made from Breath Thermo performance technology, now combined with Merino wool and trusted by Winter Olympics Ski Team Sweden Alpine. First developed 30 years ago as a moisture-absorbing and heat-retaining material, Mizuno has elevated their signature technology with the inclusion of Merino wool.
Engineered for extreme conditions and designed for comfort and unrestricted movement; Mizuno’s latest performance wear takes next-to-skin innovation to a new level. Trusted by Ski Team Sweden Alpine as they prepare for the Milano Cortina 2026 Winter Olympics, the Breath Thermo Merino wool-rich base-layer and leggings deliver warmth, breathability and comfort where it matters most.
Mizuno Breath Thermo Base-Layer: Soft and lightweight knit that generates heat while offering the natural insulation, moisture management and odour resistance of the Merino wool fibre. 
Mizuno Breath Thermo Leggings: Flexible and high-performing performance wear combining heat generation enhanced by the wool fibre’s natural breathability, insulation and comfort.
Mizuno’s Breath Thermo technology generates heat from body moisture to keep athletes warm by tapping into the Merino wool fibre’s natural insulation, moisture management and odour resistance. Lightweight and high-performing, both the base-layer and leggings move with the body for peak performance in cold-weather conditions. Each piece is Woolmark Wool Blend certified, a guarantee of wool fibre quality and performance that stands up to rigorous testing standards.
Merino wool has long been trusted by elite athletes for its performance benefits. A four-year study conducted by North Carolina State University found that wool offers the highest capacity to manage moisture and regulate body temperature during shifts from 45% to 80% relative humidity. This ability to adapt to changing conditions makes Merino wool an ideal choice for high-intensity training and endurance sports. Now combined with Mizuno’s pioneering technology, the wool fibre’s natural properties help to deliver warmth without extra bulk, insulation without restriction and performance without compromise. From alpine slopes to everyday training, Mizuno technology unites with the wool fibre to create layers made to perform under pressure.
The Mizuno Merino wool base-layer and leggings are available to shop here.
