Head-to-Head
Velocity Nitro 4vsAero Razor
The Velocity Nitro 4 is a daily trainer shoe while the Aero Razor is a speed trainer shoe. Both are priced at $140. The Aero Razor is the lighter shoe at 6.9 oz versus 8.0 oz for the Velocity Nitro 4. In our ratings, the Aero Razor edges out the Velocity Nitro 4 — 8.9/10 versus 8.8/10.
| Rating | 8.8 / 10 | 8.9 / 10✓ | |
| Price | $140✓ | $140✓ | |
| Weight | 8.0 oz | 6.9 oz✓ | |
| Category | Daily Trainer | Speed Trainer | |
| Terrain | Road | Road | |
| Cushion | Medium | Medium | |
| Softness | Balanced | Firm | |
| Drop | High | Low | |
| Drop (mm) | 10 mm | 4 mm | |
| Stack | 36 mm | 36 mm | |
| Stability | Neutral | Neutral | |
| Fit | Narrow | Narrow | |
| Energy Return | High✓ | High✓ | |
| Breathability | Medium | Breathable✓ | |
| Traction | High | High | |
| Shock Absorption | Medium | Medium | |
| Durability | Good | Good |
