His big slouch hat even was cocked jauntily over the bed-post.
H. G. Wells. The Invisible Man
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It was Jules—Jules with his hands in his pockets and a slouch hat over his eyes, but in other respects attired as usual.
Arnold Bennett. The Grand Babylon Hôtel (1902)
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Murtagh bent to peer under the slouch hat that masked Jamie’s telltale hair.
Diana Gabaldon. Outlander (1991)
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Vronsky in his long overcoat and slouch hat, with his hands in his pockets, strode up and down, like a wild beast in a cage, turning sharply after twenty paces.
Leo Tolstoy. Anna Karenina (Translated by Constance Garnett)