Blundstone Boots 510 Black. Simple and versatile, these Blundstone 510 boots are the ultimate basic wardrobe staple. Made with premium black leather uppers, these boots can be paired with any look. Complete with a removable insole and polyurethane soles, these boots are also resistant to acid, , and oil, and can withstand microbial attack and hydrolysis. Lightweight and durable, these boots are designed to be comfortable for active feet.