A Puffy 90s Style Inspired by the Past, But Built for Today The Knu Skool is a modern interpretation of a classic 90s style, defined by its puffed up tongue and 3D-molded Sidestripe, and tied off with coiled laces. With its in-your-face profile and dramatic style details, the Knu Skool plays off of the original Old Skool while blending an icon of the past with today’s trends. Reissued 90s low-top shoe Sturdy suede uppers Puffy tongue and ankle collar Puffy 3D molded Sidestripe™ Heel pulls for ease of entry Signature rubber waffle outsoles