22.0 Mag/Arcsec² astronomy t-shirt | Umbra Void

22.0 Mag/Arcsec² T-Shirt | Umbravoid

Black / S
865.000 VND
865.000 VND
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22.0 Mag/Arcsec² astronomy t-shirt | Umbra Void
  • 22.0 Mag/Arcsec² astronomy t-shirt | Umbra Void
  • 22.0 Mag/Arcsec² astronomy t-shirt | Umbra Void
  • 22.0 Mag/Arcsec² astronomy t-shirt | Umbra Void
22.0 Mag/Arcsec² T-Shirt | Umbravoid

22.0 Mag/Arcsec² T-Shirt | Umbravoid

865.000 VND
865.000 VND
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Use code UMBRAVOID to save extra 10% on your first order
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Sky quality has a number: magnitudes per square arcsecond. A pristine wilderness sky reads around 22 — the darkness where the Milky Way casts shadows and thousands of stars crowd the view. Your backyard probably reads far brighter. '22.0 mag/arcsec²' is a quiet flex for the dark-sky devotee who measures their nights with a sky-quality meter and chases that perfect Bortle 1 reading. For stargazers who know exactly how dark their favorite site really is. A premium tee for the data-driven observer. Available in 7 sizes (S–4XL) and 10 colorways.
  • 100% soft ring spun U.S. cotton fabric & cotton threads
  • Proud member of the U.S. Cotton Trust Protocol
  • OEKO-TEX certified low-impact dyes
  • Salt free clean pigment dye colors
  • Plastic-free packaging — polybags removed on all colors except White

All of our shirts are shipped directly from the United States. Orders are processed within 1 to 2 business days and 4-6 days of delivery

  • The standard shipping fee is $5.99
  • All orders over $99 is free shipping
100%

Organic Cotton

GOTS certified. Grown without pesticides. Soft, breathable, built to last decades.

∞

Colorfastness

Water-based inks cured at 320°F. Wash after wash, the design stays as sharp as the night sky.

✦

Peer Reviewed

Every design is verified against current astronomical data. Coordinates are real. Objects are real.

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Made in USA

Produced in the United States. Shorter supply chain, lower footprint, faster delivery.

UMBRAVOID GALLERY

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All orders are printed and shipped from our facility
in the United States. Once your order is placed,
you can expect delivery within 5–7 business days.

We carry sizes XS through 4XL to fit as many
stargazers as possible. Not sure which size is right
for you? Check our size guide on this page —
we recommend sizing up for a relaxed fit.

Turn inside out before washing. Cold water,
gentle cycle. Tumble dry low or hang dry.
Do not iron directly on the print.
Treat it right and it'll last for years of clear nights.

Reach us anytime at cs@umbravoid.com.
We typically respond within 24 hours.

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