TrefoilKnot Maths t-shirt & hoodie
A trefoil knot: one unbroken line that crosses itself three times and cannot be pulled apart. The crossings are worked out by the drawing itself, so the strand passing underneath is the one that breaks. Small on the chest, full size across the back.
Printed twice: a small version above the left chest and the full-size artwork across the back.
Product
Colour
Sizes XS–2XL at this price; 3XL +£3.00, 4XL +£5.00, 5XL +£7.00.
Choose size & buyOpens the designer with this print on your unisex tee — pick a size, add a name or move the print, then check out.
Size guide — Unisex Tee
| Size | Chest width | Body length | Price |
|---|---|---|---|
| XS | 16.5" | 27" | £23.00 |
| S | 18" | 28" | £23.00 |
| M | 20" | 29" | £23.00 |
| L | 22" | 30" | £23.00 |
| XL | 24" | 31" | £23.00 |
| 2XL | 26" | 32" | £23.00 |
| 3XL | 28" | 33" | £26.00 |
| 4XL | 30" | 34" | £28.00 |
| 5XL | 32" | 35" | £30.00 |
Measurements are of the garment laid flat, in inches, as published for the Bella+Canvas 3001. Allow an inch either way. 5XL is not made in forest or sand.
Delivery
Printed to order: usually 3–5 working days in production, then 2–4 working days delivery in the UK, 4–8 in Europe and 6–12 elsewhere. £3.99 per order, tracked.
Fabric
Bella+Canvas 3001: soft, lightweight 100% combed ring-spun cotton (heather colours are cotton/polyester blends), side-seamed with a retail fit.
Care
Wash inside out at 30°, no bleach, tumble dry low, iron on the reverse. Direct-to-garment ink is part of the fabric, so it won't crack or peel.











