Symbol 3109 from ISO 7000 - Title/Meaning: Do not tumble dry Function/description: To indicate that tumble drying is not allowed in the drying process.
pay attention to orientation of symbolApplication referenced in: ISO 3758:2012
Additional information: 
Graphical symbol is based on the GINETEX care labelling system.
Own work using: iso.org/obp/graphics/grs/731c57d9-b821-46c6-90cf-4ddebd9a30eb 200.png
Vectorization:  Mrmw