S/Lab Ultra v3
Width options: standard (Men's) / standard (Women's)
Not enough evidence yet
2 of 2 runners said this shoe fit true to size.
Sizing vs. popular reference shoes
| If you wear | Length | Width | Toebox | Reports |
|---|---|---|---|---|
New Balance FuelCell SC Elite 4 (Women's) 10.5100% 1 of 1 runners landed on 10.5 (0.5 weighted). | True to size | True to width | Good room | Early reportsEarly Based on 1 reportUS 10.5-10.5 |
Saucony Endorphin Pro 2 (Women's) 10.5100% 1 of 1 runners landed on 10.5 (0.5 weighted). | True to size | True to width | Good room | Early reportsEarly Based on 1 reportUS 10.5-10.5 |
1 of 1 runners landed on 10.5 (0.5 weighted).
1 of 1 runners landed on 10.5 (0.5 weighted).
Community reports
Across the full report set, this many called the shoe true to size.
Reports with extra written context about what runners actually felt.
Signals for hotspots, blisters, or other pain points across the full report set.
| Came from | Bought | Verdict | Runner note | Issues | When |
|---|---|---|---|---|---|
Saucony Endorphin Pro 2 (Women's) Size unknown | 10.5 | True to sizeTrue to width | slightly snug on medial edge of big toe, enough room at front, no pinching | [ambiguity: Reference shoe (Endorphin Pro 2) mentioned in post but no explicit size given for it; target shoe size is explicit (10.5). Poster mentions using multiple carbon racers but only Phantasm has explicit size.] | [gender: male/explicit] | [source: /r/RunningShoeGeeks/comments/1b943o4/salomon_slab_phantasm/] | No issues | Mar 2026 |
New Balance FuelCell SC Elite 4 (Women's) Size unknown | 10.5 | True to sizeTrue to width | slightly snug on medial edge of big toe, enough room at front, no pinching | [ambiguity: Reference shoe (NB FC Elite 2) mentioned in post but no explicit size given for it; target shoe size is explicit (10.5). Poster mentions using multiple carbon racers but only Phantasm has explicit size.] | [gender: male/explicit] | [source: /r/RunningShoeGeeks/comments/1b943o4/salomon_slab_phantasm/] | No issues | Mar 2026 |
slightly snug on medial edge of big toe, enough room at front, no pinching | [ambiguity: Reference shoe (Endorphin Pro 2) mentioned in post but no explicit size given for it; target shoe size is explicit (10.5). Poster mentions using multiple carbon racers but only Phantasm has explicit size.] | [gender: male/explicit] | [source: /r/RunningShoeGeeks/comments/1b943o4/salomon_slab_phantasm/]
slightly snug on medial edge of big toe, enough room at front, no pinching | [ambiguity: Reference shoe (NB FC Elite 2) mentioned in post but no explicit size given for it; target shoe size is explicit (10.5). Poster mentions using multiple carbon racers but only Phantasm has explicit size.] | [gender: male/explicit] | [source: /r/RunningShoeGeeks/comments/1b943o4/salomon_slab_phantasm/]
Compare with popular shoes
See how the Salomon S/Lab Ultra (Men's) fits side-by-side with shoes runners know well.
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