The adidas GSG9 shoes get an update from Y-3. In a nod to the Japanese technique of Sashiko stitching, these trainers have accentuated and tonal stitching around the eyestay, heel tab, midsole and signature 3-Stripes, with all threads intentionally hanging loosely. They're fabricated in premium leather and suede material. Y-3 GSG9 BOOT, BLACK/BLACK