Head-to-Head
Gel Cumulus 28vsGlycerin Flex
The Gel Cumulus 28 and Glycerin Flex are both daily trainer shoes built for road running. The Gel Cumulus 28 retails for $145 while the Glycerin Flex comes in at $170 — a $25 difference. Both weigh 9.1 oz. In our ratings, the Glycerin Flex edges out the Gel Cumulus 28 — 8.0/10 versus 7.9/10.
| Rating | 7.9 / 10 | 8.0 / 10✓ | |
| Price | $145✓ | $170 | |
| Weight | 9.1 oz✓ | 9.1 oz✓ | |
| Category | Daily Trainer | Daily Trainer | |
| Terrain | Road | Road | |
| Cushion | Medium | Medium | |
| Softness | Balanced | Balanced | |
| Drop | Medium | Medium | |
| Drop (mm) | 8 mm | 6 mm | |
| Stack | 38.5 mm | 36 mm | |
| Stability | Neutral | Neutral | |
| Fit | Medium | Narrow | |
| Energy Return | Low✓ | Low✓ | |
| Breathability | Medium | Medium | |
| Traction | Medium | High✓ | |
| Shock Absorption | Medium | High✓ | |
| Durability | Good | Good |
