Defend The Dark T-Shirt | Umbravoid
Defend The Dark T-Shirt | Umbravoid
Dark sky preservation isn't just an astronomy issue — it's an environmental one, a health one, a wildlife one. But astronomers are often the first to notice when the darkness retreats. Defend the Dark is a statement of purpose in emblem form: a badge of commitment to protecting what light pollution takes from us all. The conservation-patch design style connects dark sky advocacy to the broader tradition of protecting natural resources. Wear it as a conversation starter about shielded lighting, responsible outdoor illumination, and why your HOA really should care about full-cutoff fixtures. Part of every purchase supports the Umbra Void commitment to dark sky awareness. premium ring-spun U.S. cotton with a feel as smooth as a Bortle 1 horizon. 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
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.
Made in USA
Produced in the United States. Shorter supply chain, lower footprint, faster delivery.