The Adidas Adizero SL 2 and Altra Experience Flow 3 are both neutral road running shoes with moderate cushioning. The Adizero SL 2 is 0.6 oz lighter (8.4 oz vs 9 oz), costs about $93 less (from $52), sits higher off the ground (36 mm vs 32 mm heel stack) and is rated higher by buyers (4.7 vs 4.4 out of 5).
Bottom line: Pick the Adizero SL 2 if you want the lighter shoe; pick the Experience Flow 3 if you like feeling closer to the ground.
Specs side by side
| Spec | Adizero SL 2 | Experience Flow 3 |
|---|---|---|
| Price | $52 | $145 |
| Rating | 4.7 / 5 (475 reviews) | 4.4 / 5 (165 reviews) |
| Weight | 8.4 oz | 9 oz |
| Heel-to-toe drop | 9 mm | — |
| Heel stack height | 36 mm | 32 mm |
| Cushioning | Moderate | Moderate |
| Support | Neutral | Neutral |
| Surface | Road | Road |
| Available for | Men | Men & Women |
Specs and prices from Adidas and Altra, checked 2026-11-02. Weight is usually for a men's size 9–10.
Which should you get?
Get the Adizero SL 2 if…
- you want the lighter shoe
- you want to spend less
- you want more foam under your heel
Get the Experience Flow 3 if…
- you like feeling closer to the ground
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