The foundation of the Ivanhoe NLS (New Level of Sustainability) collection is responsible production. Dyeing processes create a chemical load and consume waterbut by using carefully selected natural wool colors, dyeing becomes unnecessary! High-quality materials and production contribute to durability: when creating clothing, its made to be so long-lasting that its extended lifespan offsets some of the production impact. The Larch is a functional and stylish choice for cooling weather and as part of a warm layering system. - Regular fit - Material: 100% lambswool - Naturally odor-resistant - Keeps you warm even when damp - Yarn is bluesign certified, and no mulesing is used in wool production - Logo on the sleeve is made from jacron, a cellulose-based faux leather The Larch shirt can be machine washed if needed. Use a 30ºC wool cycle and wool detergent, without spinning. Ensure there are no traces of bleach or fabric softener in the machine. Often, airing out is sufficient.