What does this symbol mean?
ISO 3758 A triangle crossed out with an X

Do not bleach

The item should not be bleached.

Where a garment's own label or its manufacturer says otherwise, that takes precedence.

How to read it

A triangle stands for bleaching. Crossed out, it indicates that no bleach of any kind is suitable for the item.

Also searched as: crossed out triangle.

More laundry symbols

Sources

  • Textiles — Care labelling code using symbols, ISO 3758, ISO
  • Standard Guide for Care Symbols for Care Instructions on Textile Products, ASTM D5489, ASTM International

Last reviewed September 23, 2026.