Brandblack EXCLUSIVE AT NET-A-PORTER. Brandblack's 'Saga' sneakers have been created in collaboration with Korean label, Pushbutton. Fitted with a stretch-knit insert for a snug fit, the upper is made from supple leather and breathable mesh. They're grounded on the brand's signature Vibram sole - usually reserved for hiking boots and trekking styles - so are super comfortable and lightweight.