Perfect Numbers Crewneck Sweatshirt S-5XL – Math Nerd Graphic Sweatshirt
Wear a quiet joke that only other math lovers will read and grin at. This medium-weight crewneck lays flat and simple, letting the white ‘Perfect Numbers’ print stand out against deep black. The row of classic perfect numbers, printed down the front in clean, readable type, feels like a small classroom trophy — subtle pride for anyone who spends evenings chasing proofs, pondering divisors, or teaching number theory. It’s the kind of sweatshirt you pull on for late-night problem sets, campus strolls, or coffee-shop conversations where someone finally notices and starts a friendly debate. Casual, slightly nerdy, and unpretentious: it fits into a life where curiosity and dry humor live together.
Product features
- Made from 50/50 cotton-poly (8.0 oz/yd²) for balanced warmth and durability
- Tubular knit (no side seams) with ribbed collar and double-needle stitched seams
- Inner neck labels and wrist prints applied with DTF; other prints via DTG
- OEKO-TEX® certified dyes; ethically grown US cotton; 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
Without side seams
Knit in one piece using tubular knit, it reduces fabric waste and makes the garment more attractive
Ribbed knit collar with seam
Ribbed knit makes the collar highly elastic and helps retain its shape
Embroidery
Embroidery decoration method available on either left chest, center chest, or large center chest, as well as right + left wrists
Age restrictions
For adults
Other compliance information
Meets the flammability, lead, cadmium, bisphenols and phthalates level requirements.
Country of origin
Made in Nicaragua
DTF inner neck labels
The inner neck labels and wrist prints are printed using the Direct-to-Film (DTF) print method, while the rest of the prints are done with the Direct-to-Garment (DTG) method.
Do not dryclean; Do not iron; Machine wash: cold (max 30C or 90F); Non-chlorine: bleach as needed; Tumble dry: low heat.
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Any goods purchased can only be returned in accordance with the Terms and Conditions and Returns Policy.
We want to make sure that you are satisfied with your order and we are committed to making things right in case of any issues. We will provide a solution in cases of any defects if you contact us within 30 days of receiving your order.
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Designs © 2026 Charlotte Place Design
and Christopher Fayers