A Puffy 90s Style Inspired by the Past, but Built for Today The Knu Skool DR is a modern interpretation of a classic 90s style, defined by its puffed up tongue and 3D-molded Sidestripe, and tied off with oversized, chunky laces. With its in-your-face profile, dramatic style details, and D-ring eyelets that provide a vintage aesthetic and extra lacing support, the Knu Skool DR plays off of the original Old Skool while blending an icon of the past with today’s trends.