Part of the Active Apparel series offering fundamental gear for mindful movement, this long-sleeved top is a thermal base-layer optimal for the colder seasons. Sewn from a blend of responsible merino wool and COOLMAX® recycled polyester with a hint of elastane for gentle stretch, it features a close-to-skin fit so it can be worn comfortably under other garments. BreathableQuick-dryPart of a set: matching tights availableThe wool comes from non-mulesed sheep and is certified according to the Responsible Wool Standard (CU872017) - an independent, voluntary standard ensuring that wool from certified farms is properly identified and tracked through all processing stages. The goal of RWS is to protect the sheep that supply the wool and the land on which they graze