Blundstone 510 Chelsea Boots in Black. Simple and versatile, these Blundstone boots are the ultimate basic wardrobe staple for men. Made with premium black leather uppers, these boots can be paired with any outfit. 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.