Lightweight, Long Sleeved Shirt Needed

My lightest l/s is 3.6 oz RAB echo

But, my 7oz ex officio reef runner is much cooler and my choice in warm weather hiking.

If it were me, I would get a shirt in Taiwan. I could even have it made by a tailor because they do that in Asia. I would get another shirt in Mexico. I'd get some huaraches, too.

A plain lightweight polyester dress shirt can equal many expensive button down hiking or travel shirts with a hefty price tag. Once you get past the flapped pockets and other outdoorsy features, they are just shirts.

Appreciate the different suggestions. I hadn't thought of purchasing clothing at my destinations, though it's something to consider. I likely won't have much time to shop around in Taiwan, but it would be cool to purchase something custom tailored. I also appreciate the suggestion to keep things simple with something like a standard polyester dress shirt.

Have you looked at shirts from RailRiders? They are having 20% to 50% off sale right now. I have a couple shirts from RailRiders and absolutely love them!

I've had been looking at their Adventure shirt, which appears to be about the only shirt not on sale. I might try out the Eco-Mesh or one of the other models.

I've worn an old REI Sahara long sleeve for a while too. It has been fine but i was looking for a new shirt like you. This same discussion came up on the Gear Forum a couple of weeks ago and one of the members recommended the Patagonia Sun Stretch Fishing shirt. I ordered one to try it. I just got back from doing the Rae Lakes Loop and wore it everyday for 3 days. I loved it. It feels great. Smooth and soft. Not like some slick feeling shirts I've had that feel horrible. It's a polyester/nylon blend. I'm 5'9 and 155lb and a med fit perfect. 6.7oz. The only downside is its a bit pricey.

http://www.patagonia.com/us/product/mens-long-sleeved-sun-stretch-fishing-shirt?p=52196-0

I really like the long sleeve version. Not incredibly durable, unfortunately, but the most breathable shirt I've ever worn.

I think the REI Endeavor shirt is relatively new, or at least it's new to me. I, too, used REI Sahara shirts for backpacking in the past, but I find them too hot and not sufficiently breathable. The Endeavor shirt is quite a bit cooler, and is a softer, stretchy fabric (nylon/spandex). UPF is claimed to be 50. My medium weighs 7.4 oz., about 0.5 oz. less than my Sahara shirt. The only review so far is mine, but I want to update it. I will rate it at 5 stars, based on two subsequent backpacking trips. It's considerably cheaper than the Patagonia mentioned above, even if you're not an REI member. Here's a link: http://www.rei.com/product/877610/rei-endeavor-shirt-mens
If the link doesn't work, it's REI item #877610.

Appreciate the recommendation on the Endeavor shirt. I may give it look at REI, but sounds great based on your review. The Patagonia shirt is sharp looking and I've always had positive experiences with Patagonia in general, but it doesn't come cheap. Their Guidewater II pants also look nice, both for backpacking and for general wear.