Slam Jam x Vibram Rubber Core Boots White Asparagus / Black The iconic powerhouse Slam Jam and Vibram expand their technological and design horizons for the first time. Driven by the desire to find connections between fashion, design and technology, the two entities collide together to create the Rubber Core boots. The final output is a hybrid shoe made in 5 steps, from the sole to the upper. Compared to the standard shoe-making production, Vibram steamlined the process thermoforming on a 3D last a Vibram StratX rubber sheet to realize a one step upper. - Vibram StratX Upper - Water-Resistant - Debossed Branding - Vibram Megagrip Rubber Compound - Vibram Litebase Sole - Style Code: SJ23URC13 WHBL