Super Undies sizing is based on waist and thigh measurements, not just age or weight, but as a convenience our age/weight ratios are reasonably accurate with your child is in the 50th percentile.
To get the best fit:
• Waist: Measure around the natural waistline while your child is standing.
• Legs: Measure around the top of the thigh where the leg openings will sit.
Compare your measurements to our size chart before ordering. If you need help, feel free to reach out!
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