Herschel Supply Co. Abott in Navy. Herschel Supply Co. Abott in Navy. 62% acrylic 38% poly. Spot clean. Front logo patch detail. HERS-UH34. 1001 0340. 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.