Christian Dior Logo Band Straw Sun Visor Hat | eBay。Dior straw hat rare and stylish Based on the measurement shown, this hat has an internal diameter of approximately 7.5 to 8 inches.Because hat sizing is based on head circumference rather than a straight diameter, here is how that measurement typically translates to standard hat sizes:Size Conversion TableMeasurement (Approx.)Standard Hat SizeInternational Size7.5\" Diameter7 1/4 to 7 3/8L (Large)8\" Diameter7 3/4 to 8XXL (Extra Extra Large) Stylish and comfortable, the Miss Dior Bucket Hat features a chic black and white design. Perfect for adding a touch of elegance to any outfit.