The 1540 V4 features:

• Lightweight textile material
• Durable engineered-knit construction
• Fresh Foam X midsole foam with approximately 3% bio-based content delivers our most cushioned Fresh Foam experience for incredible comfort. Bio-based content is made from renewable resources to help reduce our carbon footprint.
• ROLLBAR stability post system helps control rear-foot movement for enhanced support
• Lightweight solid rubber outsole