The uniform worn by the Sapeurs of the Grenadiers a Pied is supposedly well known, but from primary archival sources the uniform may not be what we expect to see...
Iconography
The well-known heavily lace Habit de Grande Tenue is depicted only twice in contemporary iconography, in both instances associated with the Coronation of Napoleon I. The print-maker Hoffmann shows a Sapeur wearing the familiar habit with lavish gold lace to the collar; lapels and button holes; cuffs and cuff flaps and their button holes; turn backs and presumably the turnbacks, long pockets and their button holes.