Kathmandu39s merino is made from ultra fine fibres ideal for super soft lightweight layering all year round regular fit with flattering v neck easy to care for machine washable merino wool woolmark machine washable wool this garment has been specially treated to prevent it from shrinking without losing any of wool39s natural properties and benefits upf 50 excellent protection for the protection from the harmful effects of uv radiation from the sun this product complies with asn