Outdoor Research  Astroman Air Sun Tank Top - Women's

I personally love having my arms out to catch a breeze (and avoid stiff, restrictive sleeves on the trail), but I was constantly struggling to keep my neck covered without wearing a bulky gaiter. The high-neck cut on this tank solved that exact problem—it offers that crucial extra coverage right where the sun hits hardest without making you feel bundled up. The material is insanely thin and lightweight. On scorching, high-heat days, it feels like you're wearing almost nothing, yet it still delivers reliable UPF sun protection. It breathes, dries in minutes, and keeps you cool when the trail turns into an oven. ​Outdoor gear can easily lean too technical or boxy, but OR nailed the balance here. It’s stylish enough to wear casually around town or while traveling, but fully technical enough to perform on demanding, sun-exposed hikes.

I’ve worn the Astroman line for years, and it’s still my favorite sun protection for kayaking, hiking, and long days outside. The fabric is incredibly lightweight, breathable, and comfortable even in hot weather. One thing to note is that the fit has changed. I had an older Astroman tank in a women’s small, and it had a boxier, roomier cut that I loved for being active. The new Air Sun Tank in a small still fits me, but it’s noticeably slimmer through the body, so it doesn’t have the same relaxed feel or freedom of movement. For reference, I’m 5’3” and 125–130 lbs. If you prefer a looser fit like the older version, you may want to size up. Even with the updated fit, it’s still hands-down my favorite sun shirt line.

I bought this for an unusually hot spring hike in Arizona. I love that it covers my neck is super breathable and dries super fast. I was nervous about hiking with something around my neck because I run hot but the ventilation is spectacular. It was not an issue at all. I bought the other 2 colors for hot hikes. The cut is flattering. Oh and the fabric around the arms covers perfectly where my back pack lies so no more rubbing. Love love it!