Symbol 3107 from ISO 7000 - Title/Meaning: Tumble drying, maximum 60 Celsius Function/description: To indicate that the tumble drying process is allowed only with low temperature: exhaust temperature maximum 60 degrees Celsius in the tumble 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/20ffc876-fa14-4793-9720-a34f148a0593 200.png
Vectorization:  Mrmw