The Hope tech E4 Brake pads have been designed so they specifically work directly with hope Braking systems.
Hope have developed some fantastic braking systems over the years, they're well known for their stopping power, reliability and that legendary "Feel" that a good set of hydraulic disc brakes have. So why would you go ahead and spoil all of that by putting some third party brake pads in when you finally wear out the original pads? No, get the real thing right here to ensure that your brakes perform as they should, when they should.
Hope recommend Sintered pads for the winter and the standard pads in the summer.