A versatile active top for year-round layering and everyday comfort, the 200 Oasis Long Sleeve Crewe Moon Phase is icebreaker's best-selling base layer, made with 100% merino wool.

The soft merino jersey fabric is breathable, stretchy, and odour-resistant, and flatlock seams provide chafe-free comfort. The top's original artwork features a line drawing of the moon's waxing and waning.

Inspired by nature, icebreaker harnesses the performance qualities of natural fibres to offer an alternative to clothing based on petrochemical synthetics. Merino is an annually renewable fibre that naturally resists odours, keeps you cool when it's hot and warm when it's not, and lets your skin breathe for comfort all day, every day.