DETACHABLE CHIN STRAP: adjustable for a better fit; won't blown off when it gets windy.
SIZE - Small fits for 54-55CM,6 3/4-6 7/8, 21.2"-21.6". With an adjustable drawstring built in sweatband to help find the best fit.
FOLDABLE: folds up easily, compact and perfect as a fishing or travel hats.
The brim of the hat measures between 4 and 4.5 inches long, providing ample shade for the forehead, eyes, and cheeks from UV rays. The design is very charming.
SPF 50+: this sun hat has passed UPF 50+ test, it could block 97.5% or more of sun UV rays.