Everything you love about our original Chelsea boots is turned up to the max in the Style #510. All the durability. More comfort. More shock absorption. More places to see. Blundstone Brand New Premium Leather Chelsea Boots. Style# 510 in Black. SPECIFICATIONS - Black premium water-resistant leather - Black elastic side - Durable TPU outsole - Cushioned midsole for comfort - SPS Max Comfort system for outstanding shock absorption - Removable footbed - Lightweight and comfortable