Herschel Supply Co. Trade XL in Black. Herschel Supply Co. Trade XL in Black. Polycarbonate exterior with printed poly fabric lining. Retractable pull handle. Two-way zip around closure. Interior zip mesh pocket. Interior hold strap with push lock closure. Multi-directional muted wheels. Measures approx 18 W x 34 H x 12 D. HERS-UY372. 10334 00602. Herschel supplies backpacks and bags that are modern in shape with loads of crafted detail. Inspired by the old-school American mountaineering heritage and world travel, their collection is a new twist on all your vintage favorites.