125 Cool-Lite Long Sleeve T-Shirt

[This review was collected as part of a promotion.] wore the Sphere Tee on a mix of trail runs, day hikes, and a backpacking trip through the Grand Canyon. It handled warm-weather effort really well. Even in black, it felt surprisingly cool and breathable, with good airflow during sustained climbs. It dried fast when sweaty and never got that heavy, clingy feeling. It was comfortable against my skin even when I was pushing hard, which isn't always the case with merino. I didn't expect how often I'd wear it off the trail. The fabric is really soft, and the fit looks good without feeling too tight or restrictive. It's become a go to for hanging at home, working, or running errands. I received this product for free in exchange for my honest review, but already want it in another color!

[This review was collected as part of a promotion.] I have worn this shirt in black for trips to Iceland, Patagonia and Greece when packing light was important. It is very lightweight, takes up almost no room in a suitcase, and doesn't wrinkle much. Also dries quickly if you need to rinse it out. I sized up from small to medium because I like the looser fit for warm weather, and also as a top for a skirt or casual pants. But is it true to size. I bought it on sale in this color for an upcoming trip to Africa. You can wear it (even sized up) as a base layer in colder weather. Surprisingly warm for its weight when you need it, and not too warm for weather in the mid- to upper-70s. I wore leggings made of the same fabric and they were perfect base layer for long hikes in Patagonia or anywhere that you are going to start cold and warm up a lot due to activity.