I haven’t backpacked this year and have done little hiking. So of course I shopped.
My son is happy with his long sleeved REI Sahara shirt from two years ago so I ordered one for myself. I noticed the fabric is heavier 92% polyester, 8% spandex. His is lighter about 1/2 each nylon and poly with less spandex. I did a hike last weekend and the shirt was nice, but hotter than I would prefer. Expected highs were 69 but we had mid 80’s instead. The shirt kept the sun and bugs off at 8-11,000 feet over 12 miles.
I got thinking of my teenage years when “killer cotton” wasn’t a 7/365 issue. We wore cotton in the summer and the best we could find for winter. Most backpack trips in the Sierra didn’t involve hiking in the rain, it was usually more sun, bugs, and breezes that my shirt had to confront. Depending on the temperature my chambray shirt and cotton bandana would either stay pretty dry because it wasn’t too hot and sweaty, or they would be doused by sweat and/or the nearest stream or lake. Wind blows through chambray and when it gets wet or sweaty it helps to cool you right off.
Over the past 25 years I’ve tried various “vented” shirts from Ex-Officio, Railriders, and a few other brands- probably 10 hang in my closet. For the most part they’re pretty wind-resistant nylon and then try to make up for it with strips of mesh which sometimes hide behind flaps or zippers. They’re mostly still hot unless the wind is blowing and they get pretty stinky. Then I switched to wool but it has challenges too- my Sir Pendleton button-downs are very nice but can get rather hot too.
After the new REI shirt I started thinking back to that blue cotton chambray shirt. It was the coolest thing ever, reaching the peak of perfection right before it completely wore out. It isn’t a layering piece. If the weather turns cold and wet it’s just dead weight. Until then on a hot day it’s a lifesaver.
So I went shopping again. A similar, open weave shirt is headed my way, this time with a hemp/polyester blend. Hopefully the latest miracle “fadric” will be good. Otherwise I’m going back to the real cotton… or maybe linen…

