1017 ALYX 9SM - 1017 ALYX 9SM puts its signature utility-inspired spin on these staple black jeans by incorporating the iconic Rollercoaster belt buckle in the form of a handy keychain - inspired by a trip Matthew M. Williams took to Six Flags Amusement Park in California. They're crafted in Italy from mid-weight cotton to a mid-rise, slim-leg shape and feature two discreet zip-fastening coin pockets. Fits true to size.