Strontium — Spectra Tee
Strontium is the red in fireworks. Its emission lines from 460 to 605 nanometres are the reason pyrotechnicians reach for this metal whenever a display needs true crimson.
Printed to scale on black cotton, the wavelengths hold their true positions, each rendered in the colour it emits. Front placement, soft-hand finish.
Spectra reads matter by its light. Strontium sits one row below calcium on the table, close enough in chemistry to substitute for it and cause trouble in fallout.
Materials & fit
- Fabric
- Combed-cotton, printed to order.
- Fit
- Regular fit, true to size — check the size guide before ordering.
Size guide
| M | 20" / 51 cm | 29" / 74 cm |
| L | 22" / 56 cm | 30" / 76 cm |
| XL | 24" / 61 cm | 31" / 79 cm |
| 2XL | 26" / 66 cm | 32" / 81 cm |
| S | 18" / 46 cm | 28" / 71 cm |
Shipping & production
Made to order. Most pieces are produced and shipped within 2–7 business days, with delivery time added on top depending on your destination.
US standard shipping runs $4.75–$7.98 depending on weight and destination — the exact rate is shown at checkout before you pay.
Each piece is made to order, so we can’t accept returns for a change of mind or the wrong size — please check the size guide first.
If an item arrives damaged or misprinted, contact us through the contact form within 30 days of delivery with a photo and we’ll arrange a free reprint or refund — no need to send anything back.
Completes the set
