Waterflame. Shirt design series (Waterflame - Arpegasus) Posted: June 12, 2025 | Last updated: June 12, 2025. Here is some more shirt designs, at last!

The bold blue shirt, designed in partnership with OG&E, features the slogan "THUNDER UP 2025" printed in white and black block letters on the front, forming a sharp geometric design.

This year’s T-shirt design contest has the largest prize in history. The winning designer will receive $5,600. Second place gets $3,500 and third place receives $2,500.