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Black Hole T-Shirt - For 3 Solar Mass Black Hole - Oversized Tee View full details
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Black Hole T-Shirt

For 3 Solar Mass Black Hole · Oversized Tee

$32.99

Heavyweight 270 gsm · 100% cotton

Color: Black
Size: S

Cut wide and boxy. Take your usual size for the oversized look, or go one size down for a closer fit.

Size chart

Classic unisex fit. Choose your usual size for a regular fit, or go one size up for a looser one.

Want more sizing info? Open the How to measure tab.

Width (in) pit to pit laid flat Length (in) shoulder to hem Sleeve (in) centre back neck to cuff
S 18 28 15.1
M 20 29 16.5
L 22 30 18
XL 24 31 19.5
2XL 26 32 21
3XL 28 33 22.4
4XL 30 34 23.7
5XL 32 35 25

*Measured by hand with the tee laid flat, so allow 1–3 cm (about 1 in) of difference.

T-shirt measuring guide

How to measure

Width
Across the chest, one inch below the armhole.
Length
From the highest point of the shoulder down to the hem at the back.
Sleeve
From the centre of the back of the neck, over the shoulder, to the end of the sleeve.

Cut wide and boxy. Take your usual size for the oversized look, or go one size down for a closer fit.

Want more sizing info? Open the How to measure tab.

Width (in) pit to pit laid flat Length (in) shoulder to hem Sleeve (in) shoulder seam to cuff Shoulder (in) seam to seam
S 21.3 29.1 9.1 17.7
M 22.8 29.9 9.1 19.7
L 24.4 30.7 9.4 21.7
XL 26 31.5 9.4 23.6
2XL 27.6 32.3 9.8 25.6
3XL 29.1 33.1 9.8 27.6
4XL 30.7 33.9 10.2 29.5
5XL 32.3 34.6 10.2 31.5

*Measured by hand with the tee laid flat, so allow 1–3 cm (about 1 in) of difference.

A tee laid flat with its width, length, sleeve and shoulder marked

How to measure

Width
Across the chest, from armpit to armpit.
Length
From the top of the shoulder down to the hem.
Sleeve
From the shoulder seam to the end of the sleeve.
Shoulder
Straight across the back, from one shoulder seam to the other.

Cut wide and boxy. Take your usual size for the oversized look, or go one size down for a closer fit.

Want more sizing info? Open the How to measure tab.

Width (in) pit to pit laid flat Length (in) shoulder to hem Sleeve (in) shoulder seam to cuff Shoulder (in) seam to seam
S 21.3 29.1 9.1 17.7
M 22.8 29.9 9.1 19.7
L 24.4 30.7 9.4 21.7
XL 26 31.5 9.4 23.6
2XL 27.6 32.3 9.8 25.6
3XL 29.1 33.1 9.8 27.6

*Measured by hand with the tee laid flat, so allow 1–3 cm (about 1 in) of difference.

A tee laid flat with its width, length, sleeve and shoulder marked

How to measure

Width
Across the chest, from armpit to armpit.
Length
From the top of the shoulder down to the hem.
Sleeve
From the shoulder seam to the end of the sleeve.
Shoulder
Straight across the back, from one shoulder seam to the other.

Classic unisex fit. Choose your usual size, or go one size up for a looser fit.

Want more sizing info? Open the How to measure tab.

Width (in) pit to pit laid flat Length (in) shoulder to hem Sleeve (in) centre back neck to cuff
XS 18 26 32.5
S 20 27 33.5
M 22 28 34.5
L 24 29 35.5
XL 26 30 36.5
2XL 28 31 37.5
3XL 30 32 38.5
4XL 32 33 39.5
5XL 34 34 40.5

*Measured by hand with the hoodie laid flat, so allow 1–3 cm (about 1 in) of difference.

Hoodie measuring guide

How to measure

Width
Across the chest, from armpit to armpit.
Length
From the highest point of the shoulder down to the hem.
Sleeve
From the centre of the back of the neck, over the shoulder, to the cuff.

Damaged or lost? We reprint or refund

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  1. Order today
  2. Ships in 1 to 3 business days
  3. Delivered in 5 to 10 business days

Estimated dates with Standard shipping

Damaged, misprinted or lost? We reprint or refund

If your order arrives damaged, misprinted or wrong, or gets lost on the way, we reprint it or refund you. You have 30 days from the day it is delivered (for a lost package, from the estimated delivery date).

What is covered

  • An item that arrives defective or damaged
  • An item that does not match its description
  • The wrong item or the wrong size sent
  • A package lost in transit: no tracking update for 7 days in a row, not delivered 7 days after the estimated delivery date, or marked delivered but not received

How it works

  1. Email contact@teekop.com within 30 days of delivery, with your order number and photos: the whole item laid flat with the problem visible, and the size label.
  2. If the photos show the problem, we reprint your item or refund you, and you don't send anything back.
  3. If we do need the item back, we send you a return authorization and a prepaid label. Return shipping is on us.
  4. Refunds go to your original payment method within 3 to 5 business days, depending on your bank.

Good to know

  • Items must be unworn and unwashed.
  • A change of mind or a size chosen by mistake is not covered, so please check the size chart before you order.
Description
  • Material: 100% cotton, heavyweight 270 gsm
  • Fit: Boxy and roomy, cut wide through the body. Unisex sizing: take your usual size for the oversized look, or go one size down for a closer fit
  • Sizes: S, M, L, XL, 2XL, 3XL
  • Chest width, laid flat: S 21.3 in, M 22.8 in, L 24.4 in, XL 26 in, 2XL 27.6 in, 3XL 29.1 in
  • Length, shoulder to hem: S 29.1 in, M 29.9 in, L 30.7 in, XL 31.5 in, 2XL 32.3 in, 3XL 33.1 in
  • Colors: Black
  • Print: On the front
  • Care: Machine or hand wash cold, inside out, and hang to dry. Do not bleach or soak

About the design

A “Black Hole” T-shirt. The front reads “Black Hole For 3 Solar Mass Black Hole Photon Sphere Orbit Of Light At 13.5 Km, 3/2 X The Event Horizon Radius. Event Horizon Or Schwarzschild Radius At R = 2mg C² Or 9 Km For 3 Solar Masses. R=9 Km For Three Solar Masses. R=3 Km For Sun R=9 Mm For Earth's Mass Schwarzschild Radius Event Horizon Singularity”. A swirling black hole fills the upper panel beside labels including "PHOTON SPHERE" and "EVENT HORIZON," with radius calculations for three solar masses. Below, a gridded spacetime diagram marks the "SCHWARZSCHILD RADIUS," "EVENT HORIZON" and "SINGULARITY." This design suits people interested in astronomy, physics and scientific diagrams.

Size & Fit

Boxy and roomy. Cut wide through the body in heavyweight 270 gsm fabric, 100% cotton. Unisex sizing.

Which size? Take your usual size for the oversized look, or go one size down for a closer fit.

Want exact numbers? The size chart has the measurements of every size, in inches or centimetres.

Production & Shipping

Made to order, just for you. Nothing here sits on a shelf. Your item goes into production once you order, which takes 1 to 3 business days, and then it ships.

Estimated delivery time

Shipping MethodStandard US DomesticPriority US Domestic
Rate$6.99 · Free over $90$9.99
Transit Time4 to 7 business days2 to 4 business days
Total Delivery Time5 to 10 business days3 to 7 business days
Sustainability & care

Made only when you order it. We don't fill warehouses with stock that might never sell. Each item is made after its order comes in, so nothing is produced just to end up as waste.

Made to be kept. Wash it cold, inside out, and hang it to dry to keep the print looking its best.

Washing. Machine or hand wash below 45°C (113°F). Do not bleach, and do not leave it to soak.

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