The Icebreaker Tech Tee is made from soft Jersey knit 100% pure Merino wool. In warm conditions this amazing fabric transports moisture vapour away from the skin, before it turns to liquid (sweat), to be evaporated, keeping you cool & comfortable. The super fine & soft wavy fibres contain millions of air pockets that lock in body heat to keep you warm in cold conditions. Truly an all year round, all conditions piece of kit. One of the best features of Icebreaker Merino Wool is its amazing ability to naturally resist odours. You can wear this top for many days before it starts to stink, making it perfect for multi day trips as you will only need to take one base layer. Icebreaker Bodyfit 150 uses a superfine Jersey knit construction that has a dense feel & smooth finish. The 150 gram per square metre fabric is suitable for year round use & this Tee shirt is perfect base layer to be worn next to the skin under other layers, or as a stand alone fine weather travel & leisure T Shirt. Light-weight, non- itchy, odour resistant, moisture wicking, quick drying, in fact this top is just about the perfect all round base layer. Fantastic wicking properties Fast drying Odour resistant Jersey Knit Non itchy