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Men's Astroman L/S Sun Shirt


Long sleeve sun protection built for big wall climbs
FIT: Standard fit
COLOR fatigue
SIZE: S - In stock
Infinite Guarantee
Sun protection, style and comfort makes this shirt as functional as it is good looking. Built specifically for exposed climbs on sunny days, the Astroman L/S Shirt provides UPF 50+ protection that stretches, wicks and breathes. Additional sun protection comes from the shirt’s Sun Snap Collar™, which folds up and snaps in place to shield your neck from solar rays.
Fabric :
85% nylon
15% spandex stretch woven
Center Back Length :
30½” / 77 cm
Weight :
6.5oz / 184g Avg weight for size L
Fabric Performance :
Movement-Mirroring Stretch
UPF 50+
Design Features :
Concealed Snap Chest Pocket
Ring Snap Closures
Sun Snap™ Collar
AirVent™ Inner Back Yoke


Perfect long sleeve hot weather shirt


I save this sun shirt for my longest days of exposure. Keeps my skin safe and I always feel cool underneath. And doesn't stink fast like other synthetic shirts



One of my favorite new shirts!


This is an awesome shirt and something I needed in the sun protection department for summer exploration here in SoCal. I liked my red one so much I bought a green one two weeks later. I'm a big guy so it fits well as a XXL but the neck button isn't pretty tight for me. All and all great shirt and I'll be wearing it tonight arnt camp.

Ramona CA


this one i really like


this one feels light and breathable.

Monroe, WA


Great for the heat great for the river


River guide- great for coverage from the heat, Super light weight doesn't stink after days on end of use, snappy colours, Only thing is it pills under a PFD, but what doesn't except a dry suit or rain jacket. Awesome



Sizing completely changed


Wow, How does a company decide to make such drastic changes to fit without any indication of a change? Sure the site says updated but that could mean anything. I loved my first shirt so decided to order another and like the prior reviewer the new shirt isn't even close to the original size. Its like they took the prior XS and stuck a S label on it. A simple "if you liked the original fit consider sizing up with the new style." Sure I could go to a store and "showroom" the item or waste resources ordering 2 sizes and returning one but what a waste of time that a simple explanation of a change could resolve. Its marketed as a climbing shirt, why are the sleeves so short? I'm pretty average fitness 5.8 and 145 lbs so I don't want to upsize and swim in the body just to get the right sleeve length. I guess I have to cross off another of the US outdoor companies that just do not fit anymore and stick with the European and Japanese brands. Such a shame because its a really nice shirt and exactly what I wanted functionally and stylistically but no good if it doesn't fit.



Excellent outdoors shirt!


This shirt is super lightweight and breathable for hot climates but durable enough for a mid layer on colder days. Works for casual and outdoors.



New favorite shirt


I wear long sleeves all summer to keep the bugs and sun off. This is my new favorite shirt, it dries quickly, keeps the sun at bay and when I'm doing paddle sports it dries quickly and doesn't do "the wet shirt cling" overall a terrific shirt. There's an extra button hidden in the collar so you can pop and button the collar for extra sun and bug protection, a definite plus.

Tacoma, WA


Still 5 stars but.....


I have a couple of the astroman long sleeve and short sleeve shirts from the last couple years. I pretty much wear them constantly because of the fit, quality and fabric performance. I figured I better get another one Incase both are dirty so I purchased one of this years shirts. Unfortunately there seems to have been a redesign. There are fewer snaps on the wrists as well as decreased length in the arms and hem. Thankfully the waist size of the shirts has not been increased but the cut is much less athletic. I noticed the same change in the newest feedback flannel so I am not sure if this is a company wide change to appeal to a wider demographic or just these shirts. It is disappointing because as a taller thin athletic guy, outdoor research was the go to place to get great fitting clothes. I still rated it five stars because it is still a great shirt but I really regret not stocking up before they changed the fit. Something to consider if like me you have been buying outdoor research because of their great fit, it just isn't the same and that sucks.



Excellent Sun Shirt!!


Excellent shirt. Material is slick and has a nice skin feel. I wear medium or sometimes large. I am definitely a large in the Astronan series. Large fits great for me 160lbs @ 6ft.

Oaklyn, NJ


Great Shirt


I'm always anxious about fit, having OR gear in both L and XL that fit correctly. The Large is perfect, I am 6'2" 205 lbs. Sleeve and hem lengths are spot on, and chest/abdomen proportions are perfect for an athletic fit without the shirt being way to big and fitting like a sack.

Rochester, NY



4.7 25






Size & Fit Guide


Measurement shown in:
CHEST 33”84 37”94 40”102 43”109 46”117 49”124
WAIST 27”69 30”76 32.5”83 36”91 39”99 43”109
HIPS 33.5”85 36.5”93 39”99 42”107 46”117 48.5”123
INSEAM 30”76 31”79 32”81 33”84 34”86 35”89
SLEEVE LENGTH 30”76 31”79 32”81 33”84 34”86 35”89
*All sizing is based on your body measurement.
We adjust the garment for intended fit and intended use.