For the duo’s third drop, Puma and Nouchi updated the Mostro Sock, an evolution of the original 1999 hybrid silhouette. The Puma x LGN Mostro Sock will be available from Sept. 27 at louisgabrielnouchi.com and selected Puma stockists. The Puma x LGN Mostro Sock. The Mostro silhouette from 1999 is reinterpreted to feature a backless, streamlined shape and slip-on fit, showcasing one of the signature details of the Mostro style: spikes. The Puma Mostro was originally introduced over 25 years ago, containing design references to vintage track and surfing footwear.