There was a 40 degrees washing symbol, a triangle with lines in, a tumble dryer, iron, the letter F in a circle and a square with two lines in. In fact, the triangle refers to bleaching.

There are several unusual symbols hiding on your clothes labels and they're all quite important - the triangle most of all. ByAlex Evans, Deputy Audience Editor 19:04, Sat, Jun 7, 2025 | UPDATED ...

When protests highlighting police violence against Black people swept across the United States beginning in 2014, the “thin blue line” was adopted as a symbol by counter-protesters, including ...

The thin blue line symbol depicts a blue line across a black and grey Maple Leaf. While some consider the image a sign of police solidarity, it has also been criticized as a symbol of white supremacy.

One symbol, in particular, is catching attention, the triangle. It’s not just a random shape but it’s a critical indicator of whether your clothing can be bleached.