Available listings show crown heights roughly in the range of about 3.2 inches to 5.62 inches.
Many listings specify UPF 50+ protection. One description notes UPF 50+ can block roughly “97.5%–99+%” of harmful UV rays.
Brim (bill) lengths in the results range from about 2.5 inches up to 3.5 inches.
Common options include pull-on styles, chinstrap buttons or easy-close fasteners, and adjustable toggles for fit. Some listings also note a breakaway chin clasp for safety.