The Everyday Long Sleeve Zip Neck from Icebreaker is lightweight & super comfy. Using a 200g/m² pure merino rib-knit fabric, Icebreaker are one of only a few companies in the world that use the best quality, super fine merino fibers in their garments; this results in a non-itchy quality not normally associated with woolen fabrics. When you are warm the wool transports moisture away from the skin & the evaporation of this moisture helps to cool you down; however the merino fibres also contain millions of tiny air pockets that retain body heat to maintain you body temperature when the weather turns cold. Merino wool is also naturally odour resistant because bacteria find it hard to hold onto the surface of the merino fibres, therefore it cant sit & multiply to create bad smells. This top is great on multi-day trips as you dont have to pack as many clothes; this is due to the fact that you can wear them for quite a few of days at a time without them getting smelly. Great for active use or everyday wearing. Close Fit Great for outdoor & hiking Zip Neck Lightweight Naturally odour-resistant Breathable Anti-chafe flatlock stitching