The WarmWool Crewneck is a tight-fitting long-sleeved crewneck sweater designed to be worn close to the body on chilly days. Flat seams reduce the risk of irritation and chafing. This comfortable sweater is perfect as a soft and warming layer under a shell, and the wool's ability to retain heat even in damp conditions makes it ideal for activities. Its knitted fabric provides elasticity and flexibility for added comfort. Discover Aclima Warmwool Crewneck M's - the perfect base layer for comfort and style. The WarmWool Crewneck is a tight-fitting long-sleeved crewneck sweater designed to be worn close to the body on chilly days. Flat seams reduce the risk of irritation and chafing. This comfortable sweater is perfect as a soft and warming layer under a shell, and the wool's ability to retain heat even in damp conditions makes it ideal for activities. Its knitted fabric provides elasticity and flexibility for added comfort.