Rev'it! Heliox Shirt The Heliox Shirt stands as the quintessential base layer for all season comfort, meticulously blending 47 Merino wool with high performance synthetics to create a versatile 200gsm fabric. This fabric excels in insulating against the cold and wicking away moisture in warmer conditions. It boasts a sleek, minimal design with minimized seams to alleviate pressure points, featuring a seamless waistband for enhanced comfort. Its unisex design delivers a snug fit, making it the perfect undergarment for riding gear, ensuring warmth, dryness and comfort no matter the season. Protection Features: Outer Shell: Roundknit construction with Merino wool, Elastane, Dryarn (polypropylene) and Polyamide Ergonomic Features: Fit: tight fit Insulation: Merino wool yarns Features: stretchable 3D round knit technology seamless