The ST-Line X is the sweet spot of the Ford Puma line-up, taking the aggressive, track-inspired styling of the ST-Line and packing it full of premium creature comforts and upgraded tech. B&O Premium Sound System: Exceptional clarity and deep bass via a high-performance 10-speaker Bang & Olufsen audio setup. Aggressive Styling Kit: 18-inch matt black machined alloy wheels, unique ST-Line sports front and rear bumpers, a large rear spoiler, and rear privacy glass. Premium Sports Cockpit: Flat-bottomed leather steering wheel with striking red contrast stitching, matching Sensico-trimmed sports seats, and a completely customizable 12.3-inch Full Digital Instrument Cluster.