What the W selection actually changes
The title identifies a wide fitting at length 10.5. It does not provide a millimeter measurement of internal toe-cap width, so it is worth comparing the actual fit rather than assuming every Carhartt wide model shares one shape. Bring the socks and any work-approved insert you expect to use.
A useful fitting check includes room beside the little toe, clearance over the toes and enough heel retention. If the wider forefoot feels right but the heel moves excessively, compare another last or lace-up model instead of adding layers of insoles to occupy space.
The same waterproof wedge family
The soft-tan moc wedge family has a Storm Defender membrane and a rubber wedge outsole. This ASIN is a fit option within that family; it is not evidence of a separate outsole compound or an upgraded waterproof system.
Consider the work surface before choosing the wedge. Its continuous profile is different from the pronounced heel of a conventional lug boot. A site that mandates a defined heel for its tasks can rule it out even if it feels comfortable during a shop fitting.
A practical comparison list
Compare the 9.5 medium only if your measured size points there; it is not a lower-spec version. The CMF6284 in 11 wide offers a different Rugged Flex construction, while the Traditional Welt is another lace-up format. Check the exact labels on any of them for the protection your job requires. A wide fitting changes fit, not the scope of the steel toe’s protection.