The Women's Smartwool Classic All-Season Merino Base Layer Crew is a versatile long sleeve top for next-to-skin comfort in year-round adventure. Constructed with a Merino wool and recycled nylon blend with raglan sleeves, your upper body is treated to a super-soft touch, temperature regulation, durability, and chafe-free comfort. Push the limits of adventure with a base layer that stands up to the test of changing conditions.