Get your active wardrobe ready with icebreaker’s merino wool mid layers. Ethically sourced from merino wool and sustainably grown plants, the collection harnesses the natural performance properties of annually renewable, natural fibres to get you and your wardrobe closer to nature. Our mid layer clothing is sure to keep you warm when it's cold and release body heat when the weather starts to heat up. The natural temperature regulating fibres in our high quality merino wool make these mid layers versatile and functional during your adventures. Be sure to check out our 100% natural fibre t-shirts, 100% natural fibre thermal base layers and more.