In plain English: Iron at high temperature — up to about 200°C / 390°F. Cotton and linen territory.
What it looks like on the tagAn iron silhouette with three dots inside it.
What to do
- Set the iron to three dots / “cotton-linen” / high.
- Iron while slightly damp, or use plenty of steam — high heat plus moisture is what beats deep wrinkles.
- Do collars, cuffs, and plackets first, big panels last.
What happens if you ignore it
On the right fabric, little. The risk is the iron itself wandering onto a synthetic label, trim, or print — those melt on contact at this temperature.
Where you'll see it
100% cotton shirts, linen everything, denim, and heavy cotton tablecloths.
Common questions
Why won't my linen get crisp?
It's too dry. Linen needs real moisture — iron it damp from the line or use a spray bottle, then high heat sets the press.
Three dots but the garment has a printed graphic?
Iron inside out and skip the print. The fabric takes high heat; the print usually doesn't.
Related symbols
- Iron Medium Heat — iron at medium temperature
- Machine Wash Hot — wash in hot water
- Drip Dry — hang the garment up dripping wet
Or just scan the label
CareLabl reads the entire care label in one photo — every symbol on it, decoded into plain English, plus the fabric composition. Works with international and US labels. Try Pro free for 3 days, no credit card needed.