In Korea, children’s clothing sizes are generally labeled based on the child’s height in centimeters rather than by age. This system provides a more accurate fit, as it accounts for variations in growth rates among children. Here’s how it typically works:

1. **Height-Based Sizing (in cm)**: Sizes are labeled according to the child’s height in centimeters. For example, a label might show **80, 90, 100, 110,** etc., indicating that the clothing is intended for a child of that approximate height.

2. **Age as a Rough Guide**: Although the primary sizing is based on height, some labels might include a rough age range (e.g., “2T” for 2 years old), but this is less common. Korean brands generally recommend measuring the child’s height for the best fit.

3. **Additional Weight Guidelines**: Occasionally, weight ranges (in kg) are provided alongside the height measurement, especially for baby clothes, as an extra guideline for choosing the right size.

4. **Size Ranges for Toddlers and Kids**: For toddlers and young children, sizes typically progress in increments (e.g., 90, 100, 110, 120, etc.), corresponding roughly to height in centimeters. For older children, sizes can sometimes reach up to **160** cm, generally corresponding to pre-teen or early teen sizes.

This height-based labeling helps parents and shoppers choose the correct size more accurately than using age labels alone, making it easier to find a good fit for fast-growing children.