'Grasmere' Black Zug Grain Calf LeatherPlease see Description below for more information and detailed specification on the Grasmere. Tricker's 'Grasmere' a Heavy Country 'Mock' Toe Cap Boot. Seen here in Black Zug Grain Calf Leather. Built on the 4497s Last in wide fitting 6, we find this shoe to be generous fitting in width and volume. Most wearers can drop half a size into this model from a more regular fitting shoe. Specification includes, Goodyear Welted construction on a Storm Welt