Thermadry Kids Thermal L/S TopNew Zealand made, durable classic outdoor clothing. Available instore in a range of colours and styles. Made in Christchurch by WEFT, the Thermadry range of thermals provide excellent insulation even when wet. Polypropylene's performance when wet is far superior to poly viscose - be sure that when you buy "thermals" you actually are getting a warm and effective thermal underlayer that will last for years and years. For added warmth there is also the option of Thermastat thermals and for the natural, no-smell (even after many days without washing!)