The Altair by Erreà thermal shirt is part of the 3D Wear Performance line. This short-sleeve crew-neck undershirt is perfect for any sport thanks to the highly technical fabrics it is made of, which have been specifically conceived to provide support and protection in all conditions. An ultra-light line of base layer apparel that meets all lightness, flexibility and body-fitting requirements. The special knitted tubular fabric technology used to make this garment reduces seams to a minimum, to provide the greatest comfort and wearability. This fabric is highly breathable and has an athletic design with an ergonomic fit.