This might be because:
Comfort is one of the most key factors. Choose breathable fabrics, proper fits, and clothing that allows easy movement.
Cotton and cotton-rich blends are ideal as they are soft, breathable, and comfortable for everyday wear.
Lightweight long-sleeve tops, breathable trousers, hats, and clothing with good coverage help protect children from the sun.
Pack enough outfits for each day of the trip, along with a few extra changes for activities, spills, and unexpected weather.