Crewneck Sweatshirt S-5XL — 'Iron Ratio' Math Nerd Graphic Pullover

This cozy crewneck sweatshirt is for people who love clever science humor and quiet confidence. The front shows a simple, bold text block reading “Iron Ratio” with a string of numbers beneath — a tongue-in-cheek nod to chemistry/math types who appreciate an inside joke rather than loud graphics. The black, medium-heavy fabric and classic crew silhouette feel grounding and low-key. Wear it to study groups, late-night lab sessions, or weekend coffee runs when you want something that reads smart and understated. The garment’s clean lines and embroidered-print options let you keep the look minimal or add a subtle stitched accent at the chest or wrist. It moves easily from campus to casual gatherings, offering warmth, durability, and a quiet wink to fellow nerds.

Product features
- Medium-heavy 50/50 cotton-poly blend (8.0 oz/yd²) for warmth and structure
- Classic crewneck with ribbed collar and double-needle stitching for long-lasting shape
- No side seams (tubular knit) for cleaner fit and reduced fabric waste
- DTF inner neck labels and OEKO-TEX® certified dyes; meets safety and chemical compliance standards

Care instructions
- Machine wash: cold (max 30C or 90F)
- Non-chlorine: bleach as needed
- Tumble dry: low heat
- Do not dryclean
- Do not iron