The Icebreaker Sphere II SS Tee is a soft and comfortable short sleeve tee made with Cool-Lite, a blend of natural merino and plant based fibers featuring a mid-scoop neckline. Last summer we tried this new fabric blend and it exceeded our expectations. If you want to enjoy the comfort of merino wool even in the hottest summer day, the Cool-Lite shirt will not disappoint you! Even in less warmer conditions: if you are one of those persons who sweat easily you will find this shirt warm enough even on a rainy day.