Head-to-Head
Rocket X 3vsGlycerin Flex
The Rocket X 3 is a race shoe while the Glycerin Flex is a daily trainer shoe. The Rocket X 3 retails for $250 while the Glycerin Flex comes in at $170 — a $80 difference. The Rocket X 3 is the lighter shoe at 7.4 oz versus 9.1 oz for the Glycerin Flex. In our ratings, the Rocket X 3 edges out the Glycerin Flex — 9.0/10 versus 8.0/10.
| Rating | 9.0 / 10✓ | 8.0 / 10 | |
| Price | $250 | $170✓ | |
| Weight | 7.4 oz✓ | 9.1 oz | |
| Category | Race Shoe | Daily Trainer | |
| Terrain | Road | Road | |
| Cushion | Medium | Medium | |
| Softness | Soft | Balanced | |
| Drop | Medium | Medium | |
| Drop (mm) | 7 mm | 6 mm | |
| Stack | 40 mm | 36 mm | |
| Stability | Neutral | Neutral | |
| Fit | Narrow | Narrow | |
| Energy Return | High✓ | Low | |
| Breathability | Breathable✓ | Medium | |
| Traction | Medium | High✓ | |
| Shock Absorption | High | High | |
| Durability | Decent | Good✓ |
