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Comment by chrisweekly | Hacker News Reader

PSA: Patagonia makes these fantastic lightweight "Capilene cool daily" short- and long-sleeved t-shirts that feel like they must have some magical active cooling built in along with their SPF 50 protection. I don't know how they did it, but I own half a dozen and will continue to gift and recommend them as the greatest t-shirts ever made.

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They are UPF not SPF and recently they announced a voluntary recall because they weren't actually UPF 50.

Older Patagonia "Capilene" material have undesirable "odor retention" feature. Patagonia claim the updated version does much better. Do you have any experience between the new vs old (circa ~2000-2005 version)?

Only w the new ones which def do not have this (or any other) problem. Note "Capilene cool *daily*" in particular. I tried one "capilene cool runner" which was... ok I guess, but much heavier fabric, not as soft, etc.

No idea if it will help, but I've found regularly adding a capful of bleach to my laundry of polyester shirts eliminates all odors for me.

Merinos ftw though.

What’s the difference? I’m looking at some now. I hate heat but I like working in my non conditioned garage, so I’ll take anything that may help

I like the feel of polyester shirts better in hot weather. But I don't buy polyester or polyester blends anymore because they stink after just an hour or two of sweating in the sun. Merino doesn't have the same "cooling" feel but is good at wicking away and evaporating sweat, which helps your body keep a consistent temperature as long as you're hydrated. And merino doesn't reek like polyester clothing.

Thanks for the suggestion, I’ve been looking for a shirt that keeps me cool for a while, I just ordered one!

The Uniqlo Airism line has some extremely light and breathable shirts. The "micro mesh" ones are insane. But the style is not going to be everybody's taste, unlike the Capilene shirts which pretty much just look like a normal t-shirt.

+1 for airism, their v-necks are my go to undershirt for all clothing in warm weather.

Various manufacturers make UPF clothing, Outdoor Research, Kuhl, and Black Diamond are some. REI's house brand has worked well for me, though the fit is baggy.

A white cotton t-shirt is said to be SPF 15.

Never thought I'd read about Patagonia clothing on HN of all places. /s

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