Lightbulb Math Tools T-Shirt, Gift for STEM Lovers
Sand / S
€19,99
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Printed in the EU · no customs fees in the EU
Printed to order · Tracked delivery
T-shirts are printed in Europe: 1–2 business days to Germany, 5–8 to most EU countries, no customs fees. Mugs ship from the UK. Production usually takes 2–5 business days.
Easy returns: 14 days to change your mind · free reprint or refund if your item arrives defective.
Shipping · Returns & defects
This tee carries the quiet joy of making something from an idea. A warm, hand-sketched lightbulb sits above a compass, protractor and mechanical pencil — tools of measurement and imagination. It sits on a soft, midweight cotton canvas that wears in, not out, and keeps its shape through repeated washes. Wear it to late-night drafting sessions, studio critiques, or casual weekends when you need a reminder that precision and play belong together. The design reads as both playful and purposeful, a subtle nod to creators who think with their hands and plan with their hearts.
Size guide
| Size | S | M | L | XL | 2XL |
|---|---|---|---|---|---|
| Width (cm) | 45.7 | 50.8 | 55.9 | 61 | 66 |
| Length (cm) | 71.1 | 73.7 | 76.2 | 78.7 | 81.3 |
| Sleeve (cm) | 38.4 | 41.9 | 45.7 | 49.5 | 53.3 |
| Width (in) | 18 | 20 | 22 | 24 | 26 |
| Length (in) | 28 | 29 | 30 | 31 | 32 |
| Sleeve (in) | 15.1 | 16.5 | 18 | 19.5 | 21 |
Unisex classic fit (Gildan 5000). Measured flat: width across the chest, length from the top of the shoulder, sleeve from the centre back. Tolerance ±3.8 cm (1.5 in). Between two sizes? Pick the larger one.
Details & care
Product features
- 100% cotton solid colors; midweight 180 g/m² fabric for year-round comfort
- Tubular knit (no side seams) for cleaner lines and reduced fabric waste
- Ribbed collar and shoulder tape for shape retention and durability
- Dual DTF/DTG printing for crisp sleeve/inner label detail and vibrant front artwork
- Tear-away label, OEKO-TEX® STANDARD 100 certified, ethically sourced US cotton
Care instructions
- Non-chlorine: bleach as needed
- Do not iron
- Do not dryclean
- Machine wash: cold (max 30C or 90F)
- Tumble dry: low heat
Product safety (EU)
EU representative: HONSON VENTURES LIMITED, gpsr@honsonventures.com, 3, Gnaftis House flat 102, Limassol, Mesa Geitonia, 4003, CY
Product information: Gildan 5000, 2 year warranty in EU and Northern Ireland as per Directive 1999/44/EC
Warnings, Hazard: For adults, Made in Nicaragua
Care instructions: Machine wash: cold (max 30C or 90F), Non-chlorine: bleach as needed, Tumble dry: low heat, Do not iron, Do not dryclean