100% Extra fine lambswool, this was literally the softest wool we could find, that was both ethically sourced and produced here in the British isles. Its a mid weight sweater intended for Spring/Summer wear, and more fitted than our traditional Guernsey and Submariner sweaters. To date we have focused on producing rugged, chunky knits to stand the test of time, but we really wanted to produce something lighter and more versatile that you could literally wear to work, home or out walking the coast path. Its soft enough that if you wanted to wear as a base layer, you could, but just as flexible to be worn as a sweater with shirt or t-shirt. Layer this with our hygge merino long sleeve, and our commander sweater on top, and you have the ultimate all natural antarctic expedition basics.