Green Rose recommends its long sleeves t-shirt to wear as a base layer next to the body. Merino wool makes clothes feel very soft and cozy. It will certainly be appreciated by people with a sensitive skin and allergies. The fabric of our long sleeves round neck top is certified by OEKO-TEX®. Ladies long sleeve shirts are perfect for active women, as merino wool has natural thermal qualities. It lets the body breathe and keeps it dry. This thermal long sleeves round neck top can be worn during the summer, as well as during the winter.