A great ski day starts with the right foundation. The Atomic Baselayer Long Sleeve M delivers focused warmth and controlled breathability, keeping your temperature steady as the day progresses. Crafted from a merino-blend knit with seamless, body-mapped construction, this men’s long sleeved baselayer top regulates heat and moisture exactly where it’s needed. Body temperature, under control. Soft against the skin with four-way stretch, it layers seamlessly without friction or excess bulk, never restricting movement. A technical, climate-controlling baselayer top that works quietly and consistently beneath your kit. Essential for cold ski days and long chairlift laps.