This Nike x Concepts Dunk Low Pro SB 'Holy Grail' features a shiny silver iridescent upper with custom gold skull lace locks and a silver quilted heel collar lining. It also comes with a red right tongue, blue left tongue, white midsole, and an icy translucent outsole. Released exclusively at Concepts stores in July 2015, the ‘Grail Pack’ also included the Nike SB Dunk High ‘Stained Glass’ and the Nike SB Stefan Janoski Max ‘Mosaic.’