Sleeveless running singlet for men. Smith is Erreà's sleeveless shirt designed for men and is particularly suitable for running, racing and tennis. It has been designed to follow sport's natural movements, providing perfect wearability and additional comfort. The soft fabric totally eliminates friction and guarantees long, pleasurable and comfortable training sessions. The fabric is also breathable and offers perfect ventilation, allowing the wearer to remain cool throughout an entire training session and match.