Is it a slimmer fit or more classic and boxy? I have wide shoulders, long arms, but narrow waist. recommendations for lightweight, soft, day to evenin

As numerous others have stated, it leans slightly slimmer … at least in the MEDIUM SIZE I bought. With this being 60% cotton, Hanes surprisingly makes no mention of the fabric being “pre-shrunk” at the factory to ensure a tru-fit” wash cycle after wash cycle, so I’m a bit concerned about running this shirt through the dryer due to it’s slimmer cut. Wish me luck (or a new diet 🤣)!

tuck in confortabley?

I usually wear the shirt covering the trousers. I have worn them tucked in on occasion and they were comfortable

I work outside in the heat 80-100 depending on the day. These will not keep heat inside will they?

I work outside all of the time, and really like these shirts. No comfort issues in the heat.

I like a collar thats right on my neck Are these collars lose?

There are three buttons at the neck line; I have not buttoned them up so I don't know how loose or tight the neck line may be. With the three unbuttoned the collar fits very comfortably....