Installation suggestion:
heat the heel protector with a hair dryer or scald it with boiling
water to soften it. This is convenient for installation. The heel
protector is Bell mouth shape.The installation opening is slightly
smaller. In this way, it will be more firm and will not fall off.
ED9: It is usually applicable to heels with a heel height of 5cm-6cm
ED1: It is usually applicable to heels with a heel height of 6.5 cm - 7.5 cm
ED6: It is usually applicable to heels with a heel height of 8 cm - 9 cm
The above are suggestions. Please refer to the measured data for details