Head-to-Head
Zoomfly 6vsGlycerin 23
The Zoomfly 6 is a speed trainer shoe while the Glycerin 23 is a daily trainer shoe. The Zoomfly 6 retails for $170 while the Glycerin 23 comes in at $175 — a $5 difference. The Zoomfly 6 is the lighter shoe at 8.6 oz versus 10.6 oz for the Glycerin 23. In our ratings, the Zoomfly 6 edges out the Glycerin 23 — 8.8/10 versus 8.0/10.
| Rating | 8.8 / 10✓ | 8.0 / 10 | |
| Price | $170✓ | $175 | |
| Weight | 8.6 oz✓ | 10.6 oz | |
| Category | Speed Trainer | Daily Trainer | |
| Terrain | Road | Road | |
| Cushion | Medium | Medium | |
| Softness | Soft | Balanced | |
| Drop | Medium | Medium | |
| Drop (mm) | 8 mm | 8 mm | |
| Stack | 40 mm | 38 mm | |
| Stability | Neutral | Neutral | |
| Fit | Narrow | Wide | |
| Energy Return | Medium✓ | Low | |
| Breathability | Medium | Medium | |
| Traction | Medium | Medium | |
| Shock Absorption | High | High | |
| Durability | Very Good | Very Good |
