The Sensor MERINO AIR TRAVELLER is a lightweight, men’s functional t-shirt that is made of exclusive Merino Air knit. Merino is blended with a bit of polyamide for enhanced thermo-regulation, elasticity, shape retention, and a longer lifespan. It is a one-piece knit made of a blended yarn of very fine Merino wool and polyamide silk, which is soft and pleasant to the touch while maintaining elasticity and durability.