Fibonacci - Long Sleeve

For those who know coffee isn’t just a drink—it’s a formula. This long sleeve is a wearable ode to the golden ratio of survival: hope, exhaustion, fractions learned through baking, caffeine, and prayer. Perfect for lesson days, late nights, and every spiral in between.

Soft yet sturdy, the 100% Airlume combed and ring-spun cotton (4.2 oz/yd²) gives it that “already my favorite” feel, while the retail fit keeps it casual but sharp. Tear-away label, true-to-size, and built for layering when math runs long and the coffee runs deep.

Because not every proof can be solved in short sleeves.