P = NP Chalkboard T-Shirt — Math Puzzle Vintage Classroom Tee
XS / Black
$18.81
Sale price
$18.81
Regular price
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Soft, breathable cotton meets quiet wit. This lightweight tee features a vintage classroom scene with “P = NP” chalked on an old blackboard — a clever nod that lands with a wink for coders, mathematicians, CS students, and logic lovers. The shirt’s relaxed retail fit and crew neckline make it easy to layer under a jacket or wear on its own during study sessions, hack nights, or casual meetups. Subtle weathered tones in the print give it a lived-in, nostalgic feel that reads smart without shouting. Wear it to explain nothing and spark conversations instead.
Product features
- 100% Airlume combed and ring-spun cotton; lightweight 4.2 oz/yd² for breathable comfort
- Retail fit with crew neckline and side seams for shape retention and easy layering
- Ribbed knit collar with shoulder tape and tear-away label for comfort and durability
- Print methods: crisp Direct-to-Film (DTF) for body and sleeves; some providers use Direct-to-Garment (DTG) for richer color variants
- REACH certified; Bella+Canvas manufacturing with ethical labor certifications; blank sourced from Honduras
Care instructions
- Machine wash: cold (max 30C or 90F)
- Non-chlorine: bleach as needed
- Tumble dry: low heat
- Iron, steam or dry: medium heat
- Do not dryclean
P = NP Chalkboard T-Shirt — Math Puzzle Vintage Classroom Tee
$18.81
Sale price
$18.81
Regular price