The Astroman Sun Shirt is our best-selling lightweight, stretchy, and durable fabric packed with UPF sun protection. Named after the legendary route in Yosemite Valley, the Astroman was built for exposed and rugged climbs, but works equally as well for hiking, paddling, backpacking, or any other activity when you're headed out in the blazing sun.
Lightweight, breathable packability. Incredible stretch and softness. Reliable UPF sun protection.
Outdoor Research proprietary Astroman Fabric is a catch-all for the adventurer who spends extended time in sun-baked environments. Astroman products contain UPF sun protection for long days on snow, water, or exposed rock and trail routes. Lightweight, stretchy, and silky-soft, the Astroman is comfortable for all-day wear, while retaining an extreme level of durability for brushes with rock while climbing. Named after the legendary climb in Yosemite Valley, the Astroman was originally built for exposed big wall climbing, but has since been commandeered for hiking, paddling, cycling - even dressing up for an evening out to dinner after the adventure.
bluesign® Approved Materials
Bluesign® is a system that provides safer and more sustainable environments for people to work in and everyone to live in. Simply put, bluesign changes the environmental impact of textiles for good. Outdoor Research products made with bluesign-approved materials have gone the extra step to provide the greatest safety, quality, and integrity of responsible chemicals management. Choose bluesign when you want to make an impact by reducing your impact on the planet.
Q&A
Guarantee
The Infinite Guarantee®
Outdoor Research® gear is guaranteed to perform throughout the lifetime of the product. Get your gear back on track by filing a claim on our Warranty Page
Have a question? Problem? Other request? We’re here to help you find a solution.
Our customer service is waiting for your call at 855-967-8197, on weekdays Monday-Friday between 8am-5pm PST. If you prefer email, you can send your query to info@outdoorresearch.com
Thanks for getting in touch. We can’t wait to get you back outside with your gear.
Size & fit guide
Men’s Apparel
Measurement shown in:In
Cm
XS
S
M
L
XL
XXL
XXXL
Chest
Measure under your arms around the fullest part of your chest.
33.5”-36”85-91
36”-38.5”91-98
38.5”-41.5”98-105
41.5”-44.5”105-113
44.5”-48”113-122
48”-52”122-132
52”-56”132-142
Waist
Measure around your natural waistline, keeping the tape a bit loose.
26.5”-29”67-74
29”-31.5”74-80
31.5”-34.5”80-88
34.5”-37.5”88-95
37.5”-41.5”95-105
41.5”-45.5”105-116
45.5”-50”116-127
Hips
Measure around the fullest part of your body at the top of your leg.
32.5”-35”83-89
35”-37.5”89-95
37.5”-40.5”95-103
40.5”-43.5”103-110
43.5”-46”110-117
46”-49.5”117-126
49.5”-53”126-135
Inseam
Choose a pair of pants that fits well and true to size, hitting at the top of the foot. Measure the inseam from crotch seam to bottom of the hem.
31.5”80
31.5”80
32”81
32.5”83
33”84
33”84
33”84
Arm Length
With your hand on your hip; Place the end of the tape at the center point of the base of neck. Run the tape over your shoulder, along arm to the elbow and end at the meaty part of your hand.
31.5"76
32.5"79
33.5"81
34.5"84
35.5"86
36"89
36.5"91
*All sizing is based on your body measurement. We adjust the garment for intended fit and intended use.
