Men’s boots Boots made with soft cow hide leather upper Side zipper for easy access Imported GBX style 57631 Utilitarian and ultra urban, these men's boots from GBX will take you anywhere you want to go – in style. Made with a soft cow hide leather upper, the GBX Sherling men's boots feature durable synthetic sherling lining and a rubber tread sole. A strap buckle adds detail to the boots while a side zipper provides easy access. These GBX men's boots pair well with jeans, cargos and other pants, no matter what the season.