We built the Ace Shirt to be an all-purpose, casual summer option for work, travel or backyard lounging, but if you want to tear up some singletrack lines with a more casual vibe, it works for that too. Built with all natural, 18.5 micron New Zealand Merino wool, the Ace is a sustainable fiber marvel. It feels as good as it looks. Button front. Front patch pockets with button flaps. Yoke and seam details. Machine washable. Lightweight jersey. 18.5 micron. 100% New Zealand Merino wool. 150 g/m2. Made from superfine 18.5 micron New Zealand merino wool, the super soft, quick-drying, lightweight jersey fabric outperforms synthetics and cotton in warm conditions. Wool's natural temperature- regulating and moisture-managing properties give you next-to-skin comfort year-round. We use this fabric for warm weather tops and for baselayers in the cooler times of the year. Easy care, machine washable. 100% Merino Wool.