Quick Overview

The Outdoor Research Astroman Short Sleeve Sun Shirt is a best-selling lightweight, technical sun shirt, built with AirVent technology and offering UPF protection and movement-mirroring stretch for all your adventures. Sizing Info

The Outdoor Research Astroman short-sleeved shirt is purpose-built sun protection for big-wall climbs. Inspired by one of the hardest long free climbs in Yosemite Valley, El Cap veteran Hans Florine collaborated with our design team to create the perfect woven technical shirt. Built with UPF 50+ sun protection, this shirt will protect you from harsh rays while big-wall climbing, and is stripped of sleeves for less weight and better hand jamming. 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.


  • Movement-mirroring stretch
  • Wicking
  • Quick-drying
  • Breathable
  • Lightweight
  • UPF 50+
  • Left welt chest pocket
  • Tonal rubber snap front closure
  • AirVent™ Inner Back Yoke
  • Shirt tail hem

Technical Specifications

  • Weight: 136g
  • Material: bluesign® approved 85% nylon, 15% spandex

Standard/Free shipping to major capitals takes 2-5 business days (after dispatch), with occasional delays.

Order before 11am - we usually ship the same business day!

Choose Express Post for priority packing and faster shipping.

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