Tumble dry, any heat
North American symbol: tumble drying is allowed at any heat setting. The empty circle in the square, with no dots, sets no limit.
North American symbol
What to do
Use whatever dryer setting suits the load.
- Maximum temperature
- None stated by this symbol
- Family
- Drying (square)
- ISO 3758 name
- None — this is a North American (ASTM D5489) symbol with no ISO 3758 equivalent
- Distinguishing mark
- empty circle · US
Where this symbol comes from
In ISO 3758 the empty circle-in-square is only the general sign for the tumble-drying group; an ISO care instruction always has one or two dots or a cross.
Often confused with
North American symbol: tumble without heat — the dryer's air-only or 'air fluff' setting.
Other drying symbols
Tumble dry, normal heatcircle + 2 dotsTumble dry, low heatcircle + 1 dotDo not tumble drycircle + crossTumble dry, high heatcircle + 3 dots · USTumble dry, no heat (air only)filled circle · USDo not drycrossed square · USLine dry1 vertical lineDrip dry (hang wet)2 vertical linesDry flat1 horizontal lineDrip dry flat2 horizontal linesLine dry in the shade1 vertical line + cornerDrip dry in the shade2 vertical lines + cornerDry flat in the shade1 horizontal line + cornerDrip dry flat in the shade2 horizontal lines + corner
Sources
- Government of Canada, Office of Consumer Affairs — Guide to Apparel and Textile Care Symbols (North American system) — checked 2026-09-22
- GINETEX — Care symbols (existing care symbols under ISO 3758:2023) — checked 2026-09-22
Meanings are paraphrased from these sources, not quoted, and checked on the date shown.