With the Opsial Friesk long-sleeved thermal shirt, you stay comfortably warm and protected during demanding tasks in cold environments. Crafted from a flexible blend of polyamide, polypropylene, and elastane, this unisex shirt delivers a snug fit that moves naturally with your body. Integrated ventilation zones under the arms and across the back quickly wick away sweat, preventing post-activity chill during intense physical labor. Flatlock seams eliminate chafing and skin irritation, making it an ideal base layer under workwear for outdoor jobsites, unheated warehouses, and refrigerated facilities in size XXL/3XL.