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 oversized, chunky laces. With its in-your-face profile and dramatic style details, the Knu Skool Shoes play off of the original Old Skool while blending an icon of the past with todays trends. Reissued 90s low-top shoe Sturdy suede and canvas uppers Puffy tongue and ankle collar Puffy 3D molded Sidestripe Heel pulls for ease of entry Signature rubber waffle outsoles Size 5 VANS Knu Skool Shoes (gray/black) Unisex Grey, Size 5 Grey Unisex, Shoes, Low-Top adult.