The clasp seen on this bracelet is synonymous with 1017 ALYX 9SM. The rollercoaster buckle, as it's colloquially known, is inspired by a trip taken to Six Flags Magic Mountain by the brand's founder, Matthew Williams - a trip that has subsequently spawned coveted accessory after coveted accessory. Given the immense hype that surrounds the design, it's safe to say that this iteration won't be around for long.