I am not a fan of TNF, so straight-up you know my bias. Ever since the company moved full clothing production into SE Asia from Berkeley they have inconsistent sizing, and in particular, their women's sizing and dimensions reflect that of SE Asia rather than American Women who are in general, much taller, more muscular and (self included) fattier around the waist. Wouldn't hesitate to replace my TNF sleeping bag but not sure I will try their clothes anytime soon.
That said, the EZ Dolman shirt is a loose fitting boxy fit. I found the shirt too short on me and the arm holes small. The rest of the shirt is blousey. The tech material is lightweight and would work on a hot day hike. I surmise the material will pill under the arms and on the front. There are plenty of better tech shirts out there than this one, and much better fitting to boot.