Need the perfect topping to your costume this Halloween? Well we have this Black Felt Detective Hat that will go with any detective costume, so look good and search for a good time this year! The Black Felt Detective Hat comes in one size that fits most of you private eyes out there. The Black Felt Detective Hat is about 5 _" high and is styled like a hat from the late 19th century. Everyone knows that accessories can make or break a costume, so this year make it happen.