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T-shirt Optical illusion, Penrose triangle in one solid black color and cut-outs.

Optical illusion triangle t-shirt

T-shirt optical illusion. Impossible triangle, optical illusion design in one color. The design is an isosceles Penrose triangle, whose side volumes are separated by linear spaces that create the optical illusion.

The edges of the triangle are slightly rounded. Customize the design, change the color, and create an original t-shirt, cup, t-shirt... nerd and optical illusion online.

Technical features of the design

  • Number of colors: 1
  • Minimum size for flex and flock printing: 6,1 cm X 6,1 cm
  • Type of drawing: Solid

Available print types

  • Flex printing (smooth)
  • Flock printing (velvety)
  • Digital Transfer on t-shirt
  • Laser Transfer on phone cases
  • Thermo sublimation on cases and mugs
  • Special flex printing, glittery, phosphorescent etc.
Customization steps in the designer, customize an original product step by step.

Open the Designer in a new tab : t-shirt Optical illusion triangle

Orders, security and Spreadshirt guarantee

The Spreadshirt guarantee and the security of your online purchase. Data security and management of orders and returns.

The printing of t-shirts and accessories, delivery and order management as well as returns are processed by Spreadshirt.

The secure payment is handled by the Spreadshirt platform. Your personal data does not pass through the website.

The Spreadshirt Satisfaction Guarantee is the right to exchange within 30 days from the date of the order if your personalized item does not suit you. You can choose between:

  • Exchange for a new product
  • Exchange for a voucher to be redeemed towards your next order

The price of t-shirts and items is indicated in the gallery. The price of the t-shirt + pattern + print is displayed when you choose the size and number of items to order in the designer. The price depends on the type of printing chosen, the complexity of the design, and the number of colours to be printed.

All the information on order tracking and returns are available on the Spreadshirt website.

Customization: Spreadshirt designer's user manual

Penrose impossible triangle t-shirt to print yourself online

Print your optical illusion triangle t-shirt


T-shirt optical illusion, Penrose triangle to customize and print online.

Optical illusion in the shape of an isosceles triangle to be printed on t-shirt. Penrose triangle, or impossible triangle, drawn in black solids and thin spaces for lines and edges. The triangle seems to be in 3 dimensions because of the optical illusion that forces the brain to create a volume, but the shape is geometrically impossible and paradoxical. The triangle is drawn in vector format, which allows you to change the printing color. You can also enlarge the design at will, the format retains the geometric precision of the plots when printed. Click on the triangle to display the customization buttons. The color of the design can be changed on the right. The color of the t-shirt can be changed on the right, after you click on the garment. The Spreadshirt designer also allows you to print a personalized text to accompany the triangle. To center the design on the printing area, and to align the elements with each other if you add text, click and drag until a marker appears, indicating that the design is aligned. At the top of the left menu is the gallery of t-shirts and items available for customization. T-shirt for men, women or children, hoodie, long sleeves or short sleeves, and many accessories to print, mugs, etc.

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