REI Whirligig Skort
Here's what other sites are saying:
The girls' REI Whirligig skort looks like a skirt but has the freedom of movement and coverage of shorts. Made of a quick-drying, moisture-wicking, stretchy nylon/spandex fabric; skirt conceals shorts underneath. Fabric provides UPF 50+ sun protection, shielding skin from harmful ultraviolet rays. Front and back pleats add fun style.