From Laughing Moon Mercantile. Their description reads as follows:
MEN'S MID VICTORIAN TO EDWARDIAN TROUSERS 1850-1910 Civilian trousers, appropriate for work, casual, or formal
wear. The front has vertical side pockets, a button fly, and suspender buttons. The back can have two welt pockets or none, a
back strap cinch belt, and a split back waistband with suspender buttons. The hems at the bottom of the legs are shorter at the center
front than the center back and have a very slight flare.
FIBER: Cotton, Linen, or Wool. FABRIC: Any medium bottom weight
fabric, twill, duck, jean. Wool, including plain weave, gabardine,
serge, tropical, kersey, cassimere, flannel, twill.
Plain, striped, herringbone, checked, plaid, novelty.
POCKETS: Pocketing, selesia, or light twill. LINING: Striped
cotton. FACINGS: Dark matching color cotton.
INTERFACING: Modern fusible or linen for period.
NOTIONS: Eleven 3/4" or 5/8" buttons for the suspenders and fly, two 5/8" waistband
buttons, one 1" or 3/4" back belt buckle.