The signature industrial-style buckle of 1017 ALYX 9SM may become a key feature of the collection. Following the earlier release of more items in their latest collaboration with Nike on the Essentials series, Matthew M. Williams, founder of 1017 ALYX 9SM, has now teased design sketches for their latest collaborative SF-AF1 Mid series on Instagram. It's clear that four different colorways have been created, all based on 1017 ALYX 9SM's signature black and white color scheme. Besides the gold-stamped logo on the ankle, the SF-AF1's signature strap will be replaced with 1017 ALYX 9SM's most iconic industrial-style buckle design, which is sure to appeal to many techwear enthusiasts.