Conforms to BS8466. Flat top. Protection against sunlight - UPF50+. Mesh eyelets. Press stud side turn-ups. Chin strap with l... Conforms to BS8466. Flat top. Protection against sunlight - UPF50+. Mesh eyelets. Press stud side turn-ups. Chin strap with leather toggle. Elasticated cord size adjuster with toggle. One size fits most. Head circumference: S/M 57,5cm - L/XL 59,5cm.