Our best-selling zip neck jumper is made from pure Yak yarn which is sourced from Tibet and spun in Inner Mongolia. Because of its beautiful deep colour the yarn is left undyed; we have used the dark brown marl for the main jumper colour with a lighter yarn inside the neck opening. Yak wool is an eco-friendly product, hypoallergenic and is just as soft as cashmere - it is also very breathable and is odourless! Further information can be found on our Yarn page. YKK metal zip with faux leather facing Knitted in a chunky 7-gauge knit 100% sustainable yak For a relaxed fit we suggest you order up a size.