Gelfond's Constant eπ Math Sweatshirt S-5XL — Nerdy Pi Number Graphic Crewneck

This cozy crewneck brings quiet math humor into everyday wear. Soft, medium-weight fleece drapes in a relaxed, classic fit while the clean white lettering stands out against the black fabric. The front features a tasteful, centered typographic design that names “Gelfond’s Constant” and shows the e^π value with the digits trailing off—an inside nod that sparks conversation in lecture halls, coffee shops, and late-night problem sessions. Wear it to study groups, casual seminars, or on chilly mornings when you want something comfortable and clever. The simple, understated look pairs easily with jeans or sweatpants and reads as both scholarly and laid-back.

Product features
- Medium-heavy 50/50 cotton–polyester blend (8.0 oz/yd²) for warmth and durability
- Classic crewneck fit with ribbed knit collar and double-needle stitching for long-lasting shape
- Tubular knit construction (no side seams) and tear-away neck label for comfort
- OEKO-TEX® certified dyes and ethically sourced US cotton; complies with safety and chemical 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