Button-down sun shirt – recommendation

Some of the offerings from Alpkit look promising. I wish they had dual pockets though.
https://us.alpkit.com/collections/mens-mountain-shirts

@Jerry not being burnt or even recognizing a tan doesn’t mean the UV accumulation has stopped.  For those who don’t hike as much, may not matter, but for me, who has spent all his UV money long ago-a long day out 10-12 hours with a UPF 15 shirt could be equivalent to being in the sun, shirtless for 48+ minutes-something I wouldn’t do at this point. Also, I am assuming the UPF15 is brand new and only degrades as the fibers become worn from washing, abrasion. This is not taking into account altitude, terrain-hiking on/near reflective surface, etc.

Duck Camp makes a 100% nylon shirt:
Lightweight Hunting Shirt Long Sleeve
https://duckcamp.com/products/mens-lightweight-hunting-shirt-long-sleeve-military-green

They do not list a weight.

in my world, the synthetic/poly-cotton button/snaps shirt , over a light wt merino wool zip-t is the lightest/coolest combo that is reliably bug proof. and .. just like mentioned above, it does sort of pump out the heat and moisture. what I recently found interesting is that my shirts were all in the 9 to 10 oz range, and I think I saw some Goni model that was closer to 5-1/2 to 6 oz. that’s a 3~4 oz beni right there, if it still keeps out the bugs. heck, 4 oz will get you a x2 person tent upgrade in carbon cloth. next time i spend on clothing, I will look harder at it.

v.

I know it’s heresy… cheap long sleeve cotton shirts washed in Rit Sun Guard… brings the cotton up to 30 SPF… been using these for years… on warm days, nothing is cooler than a sweat soaked cotton shirt… (not for cold weather though)…. YMMV

A cotton shirt treated with a truly effective non dangerous chemical that made it SPF 30 would be wonderful! I wonder  though. I haven’t looked into this at all.

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A little update. I just bought a Craghoppers nosilife ls pro shirt in 48/small.

The fit wasn’t great, but it was the tightest fitting shirt I’ve found so far, and for a small it still had nice length in the arms, so I figured I’ll give it a try. I will keep looking for shirts with even better fit, but having one that does the job makes any additional shirts less urgent.

Side note: I rarely visit Amazon for anything these days, but yesterday I logged in to look at an item and noticed they now have free international shipping to Norway for orders over USD 49. I haven’t used Amazon for a long time, so I have no idea if they carry anything relevant to me, but shipping has become super expensive, so if there are any relevant items that are shipped by Amazon, that could be a very viable option to get hold of brands and models that can’t be found locally.

Rit Sun Gaurd. Good advice. Thank you.

In addition to photoprotective clothing, The Skin Cancer Foundation recommends Rit Sun Guard, a photoprotective laundry additive. Rit Sun Guard washes into the clothing fibers and absorbs broadband UV-R. A single treatment of Rit Sun Guard sustains a UPF of 30 for approximately 20 launderings. The active ingredient in Rit Sun Guard is TINOSORB FD. In order to be certified by The Skin Cancer Foundation, the Coolibar clothing product must undergo extensive UPF testing to confirm the accuracy of the product labeling. Laundry additives evaluated by The Skin Cancer Foundation undergo similar tests to that of photoprotective clothing after a uniform laundering method is used to apply the product to the clothing fibers. Both of these certification processes confirm the UPF, UV-A and UV-B transmittance, and percentage blocking UV-A and UV-B. The certification process is reviewed on an annual basis.
https://pubmed.ncbi.nlm.nih.gov/15099187/#

https://skintypesolutions.com/blogs/skincare/tinosorb-s-sunscreen#:~:text=Besides%20being%20safe%20for%20human,S%20is%20also%20environmentally%20friendly.

Good points brad.  It would make sense to just get a UPF50 certified shirt.

That rit sun guard looks like a useful product

Orvis has a nylon shirt:

Orvis – The Emerger Long-Sleeved Shirt
https://www.orvis.com/product/the-emerger-long-sleeved-shirt/3F6M3552.html