The adidas AM4 "LDN" is part of the adidas AM4 City Series, a curated collection of running silhouettes tailored to the specific needs of urban runners. Focusing on what athletes need to thrive at running on the London streets, the performance sneaker features a Boost midsole and a Floating Torsion Bar, which balances flexibility and stability for optimal heel-to-toe transitions. An NFC chip in the tongue enables the shoe to be paired with the wearer's smartphone. The LDN iteration has a two-tone grey and white Primeknit upper with "Shock" green and black detailing.