Eridian Atmosphere Wall Sign

Inspired by Project Hail Mary, make the danger unmistakably clear with this ominous, sci-fi–grade warning sign marking environments that are absolutely, unquestionably not meant for human lungs. This sign feels official, Eridian, and deeply unwelcoming—in the best way. Durable, high-impact plastic built to withstand weather, UV, and enthusiastic pointing Bold, high-contrast lettering for instant readability—no squinting required Approximately 7.375" x 5.375" x 0.25" Backed with 3M 468MP adhesive for easy mounting Cold. Clear. Non-negotiable. Because some atmospheres are not “try it and see” situations.