Designed for active wear in colder conditions, the Aclima WoolShell Men's Vest has been made using soft merino wool to offer increased comfort and warmth in cold environments. Aclima's WoolShell material is a wool-fleece made from the finest merino wool and a reinforcement of polyester on the outside. The fabric has been specially chosen for its strength and pliability. Products in this line are suitable as underwear, reinforcement layers and as workout clothes during the winter.  Aclima Mens Woolshell Vest