Part of Home & Household Care.
ISO 3758 laundry symbols follow 5 basic shapes: Wash Tub (Washing), Triangle (Bleaching), Square (Drying), Iron (Ironing), and Circle (Professional Dry Cleaning). Dots inside irons and tubs indicate heat levels (1 dot = 30°C/110°F, 2 dots = 40°C/150°F, 3 dots = 60°C/200°F).