The classic Blundstone chisel toe. SPSTM Shock Protection System. Brown leather upper fused into a Dual-Density Polyurethane (DDPU) sole. The Cuthbertson Series: Built to withstand the rigors of farm life, yet refined enough to suit city life, the versatile 60 Series is ideal for just about everything. Both styles feature soles tough enough to resist common barnyard acids and with proper care the premium leather will provide years of faithful service. In the irons or on the ground, in the barn or on the town, the Cuthbertson is the ideal of fashionable versatile footwear.