Sergio Grasso Revolution W Riding Boots Black Sergio Grasso Evolution Riding Boot Evo 1 Top Black Patent Home Sergio Grasso Riding Boots Sergio Grasso Revolution Stirrups Equestrian. The premium Sergio Grasso Rvolution riding boots Italian elegance, technical performance and comfort in one Premium Nappa calf leather: supple, durable and refined Microfibre inner lining: breathable, soft and comfortable Interior in SG Ultraleder with patented grip effect for excellent leg stability Sturdy YKK rear zip closure with double safety lock to prevent accidental opening Padded heel protection for easy entry and sock protection Exclusive ProComf technology with multi layered soles: ergonomics, lasting comfort and shock absorption Elastic front lacing for a custom fit Reinforced elastic at the back of the boot to naturally adapt to the shape of the calf High cut upper for a sleek silhouette and sporty style Classic round toe for a timeless look Oblique band with screen printed logo at the top of the upper for an elegant finish Integrated spur holders on the zip guard: multiple positions available depending on discipline