The GEL-QUANTUM 90™ IV GS (Grade School) sneaker merges performance-inspired technologies with modern aesthetics and makes them functional for young feet. This shoe's upper is modified with a breathable mesh that's reinforced with synthetic leather overlays. The update midsole halos our other designs in the GEL-QUANTUM collection. It features a full-length AMPLIFOAM™ cushioning material and rearfoot GEL™ technology for improved everyday comfort. Style #: 1204A135.004