Calcium — Spectra Tee
Calcium's flame runs orange, carried by a close doublet at 610.3 and 612.2 nanometres the same test a chemist runs to confirm the metal in bone and limestone alike.
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. Calcium is the most abundant metal in the human body, and one of the easiest to identify by eye.
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
