FCS Essential Bucket Hat FCS Headware is designed to stay secure in the surf & provide protection against sun & elements Features: Removable security cord with rash-shirt attachment. Quick-dry microfiber. Neoprene headband and adjustable straps ensure comfortable fit for long periods in the water. Quick-release clip fastener. Brim is designed to shed water after a duck-dive. Plastic components: eyelets, fastener clip are non-corrosive. Cap Size Circumference: Medium: 57cm / 22.4" Large: 59 cm / 23.2"