A masterpiece of logic and illusion. The Penrose Triangle (Tribar) is the most famous "impossible object." A minimalist contour design that challenges the eye and stimulates the mind. Pure geometry for creative spaces.
Penrose Triangle Outline – The Impossible Shape Wall Decal
The Geometry of the Impossible At first glance, it looks like a solid three-dimensional triangle. But look closer. This object cannot exist in the physical world. The Penrose Triangle is a paradox—a continuous loop that defies the laws of Euclidean geometry. Placing this symbol on your wall is a tribute to the power of imagination and the limits of perception.
Minimalist Contour Design This version features a fine outline (contour) style. Instead of a heavy, filled shape, the delicate lines create an airy and modern look.
Transparency: Because it is an outline, your wall color becomes part of the artwork, making the decal blend seamlessly into your interior design.
Lightness: It adds a touch of intellectual sophistication without dominating the room. Perfect for minimalist or industrial styles.
Symbol for "Thinking Outside the Box" The Penrose Triangle is the ultimate symbol for problem-solving and lateral thinking. It reminds us that perspective changes everything and that the "impossible" is often just a matter of how you look at it.
Offices & Workspaces: To inspire creativity and complex problem solving.
Living Rooms: As a guaranteed conversation starter for guests who will try to figure out the loop.
Gaming & Tech Rooms: A nod to math, logic, and M.C. Escher-style art.
Infinity in Lines Since the path of the triangle never ends, it also serves as a modern symbol of infinity and the eternal cycle of change.
All our wall decals are specially made for you after payment is received. You will not receive stock items! Therefore, please check before ordering whether the size, color, and your surface are suitable. Not every wall paint or surface is suitable for our adhesive films!
Information about our films
High-quality wall art soft PVC adhesive film from the German company Orafol.
Silk matte surface.
Thin, adaptable, appears painted on.
Self-adhesive, easy to apply, and can be removed without any residue (adhesive: polyacrylate adhesive).
Texture: cut from adhesive films (contour cut), without white or transparent edges.
Quality: Films undergo rigorous quality control and comply with guidelines.
Health: Free from the plasticizer Bisphenol A (BPA), no toxic smell, chromate-free, REACH compliant.
Sustainable Production: Regenerative combustion plants, minimal emissions, maximized energy efficiency.
Safety: Films are flame retardant, limited smoke production, no dripping.
Temperature Resistance: from -40°C to +80°C, no change.
Longevity: 2-4 years with proper care and use (from our experience, much longer).
Color Selection
To test the color in advance and to check whether your surface is suitable for our wall decals, we recommend ordering our color sample card with a sample wall decal in your desired colors. Not every wall paint or surface is suitable!
A little trick is to test the adhesive strength in advance with a regular adhesive tape for 1-2 days. If the tape (please test for 1-2 days) sticks well, the surface is very likely suitable for our self-adhesive wall decals. To be on the safe side, order test strips in your desired colors.
Our wall decals are suitable for:
Indoor Use
Wallpapers (including most woodchip/textured wallpapers)
Wall paints with a high content of silicates (potassium silicate), silicones, latex, acrylic, and synthetic resins.
"Schöner Wohnen" paints (high content of silicate/potassium silicate/mineral wall paint).
Wall paints that are moisture-wipeable.
Surfaces with dirt-repellent properties (e.g., non-woven wallpapers).
Porous or textured surfaces.
Dusty, greasy, moist, and very cold surfaces.
Freshly painted, wallpapered, or plastered walls (wait approx. 2-4 weeks).
A detailed list of adhesion on different surfaces can be found here
A little trick is to test the adhesive strength in advance with regular adhesive tape for 1-2 days. If the tape (please test for 1-2 days) sticks well, the surface is very likely suitable for our self-adhesive wall decals. To be on the safe side, order test strips in your desired colors.
Freshly painted walls should be allowed to dry for at least 14 days. For freshly plastered walls, the waiting time should be even longer.
Adhesive films should be mounted shortly after delivery and not stored over several months. A dry, dust-free place, not below 10°C and not above 30°C, is best suited for storage.
The bonding temperature should be at least 15°C. Cold and damp walls can make it difficult to affix.
Before you start mounting, the adhesive film should be unrolled and left in the same room as the surface to be glued for about an hour. This allows the material to adapt to the room temperature. Please pay special attention to this in winter when the wall decal or sticker is delivered in a cold state.
Temperature differences during transport can cause bubbles to form. These do not affect the quality of our products. The air inclusions can be carefully smoothed out with the squeegee.
Our wall decal should only be stored for a few weeks and should be applied to the wall soon after delivery.
I am Carola Stober, a graduate media artist and founder of wandalas. I love sacred geometry, spirituality, and symbols from all over the world. Here at wandalas, you will find a constantly growing selection of lovingly designed and researched spiritual and magical motifs as wall tattoos, postcards, posters, iron-on transfers, and window films for over 10 years now.
My team and I wish you a lot of fun discovering and shopping!
Why wandalas
With your purchase, you support our small business, which the founder established to spread knowledge about sacred geometry and spiritual teachings, such as the law of attraction, and to support people with it. Read our story here.
Many of our products are made especially for you after receiving the payment.
Our texts are lovingly written by our copywriter and included in every shipment. This way, you can always read about the meaning of the symbols and motifs.
All symbols are carefully researched before we add them to the shop.
Sustainability is important to us: We use materials for our products that are produced with sustainability and environmental care in mind.
Delivery depends on the size and is carried out with Deutsche Post, or as a parcel with DHL GOGREEN (CO2-neutral shipping). You will receive larger shipments packaged in sturdy cardboard boxes. For safe shipping, we wrap larger wall tattoos or window films on a stable cardboard roll made of recycled material.
