Head-to-Head
Aero BurstvsGlycerin Flex
The Aero Burst is a recovery / easy run shoe while the Glycerin Flex is a daily trainer shoe. The Aero Burst retails for $150 while the Glycerin Flex comes in at $170 — a $20 difference. The Glycerin Flex is the lighter shoe at 9.1 oz versus 11.0 oz for the Aero Burst. In our ratings, the Aero Burst edges out the Glycerin Flex — 8.7/10 versus 8.0/10.
| Rating | 8.7 / 10✓ | 8.0 / 10 | |
| Price | $150✓ | $170 | |
| Weight | 11.0 oz | 9.1 oz✓ | |
| Category | Recovery / Easy Run | Daily Trainer | |
| Terrain | Road | Road | |
| Cushion | High | Medium | |
| Softness | Soft | Balanced | |
| Drop | Medium | Medium | |
| Drop (mm) | 6 mm | 6 mm | |
| Stack | 42 mm | 36 mm | |
| Stability | Neutral | Neutral | |
| Fit | Narrow | Narrow | |
| Energy Return | Low✓ | Low✓ | |
| Breathability | Medium | Medium | |
| Traction | Medium | High✓ | |
| Shock Absorption | High | High | |
| Durability | Good | Good |
