Salomon S/Lab Phantasm CF Review: A Race Day Rocker With a Softer Personality

Introduction

Salomon calls the S/Lab Phantasm CF the fastest road shoe they have ever created, and it comes with the usual S/Lab styling and a super-shoe price. The CF in the name stands for composite fiber, not carbon fiber. It refers to woven materials that create rigidity in the shoe, and it is worth knowing up front that a non-carbon version, the S/Lab Phantasm, also exists, so double-check which model you are buying.

This is Salomon’s race day shoe, but after time in it, the picture that emerges is less of a top-tier super shoe and more of a comfortable, rocker-driven cruiser that sits in what many runners would call the second tier. Here is how it breaks down.

Upper and Fit

The upper is made from a material called Matrix, a very thin, mesh-like fabric that is see-through through most of the shoe. Overlays are minimal, with some reinforcements on the inside, so the overall feel is light and airy on the foot.

The tongue is the weak point. It folds over easily while getting the shoe on, crinkles at the sides, and takes extra adjustment to lay flat across the top of the foot. Once on, it also does not hug the heel and collar as securely as you might want from a race day shoe. Sizing runs confusing: testers found the fit roomy enough that runners between sizes may want to size down.

Midsole, Plate and Rocker

The midsole uses Energy Surge, a lightweight, soft and bouncy foam. First impressions suggested it needed a few runs to break in, after which the cushioning felt genuinely comfortable and noticeably softer than some rivals.

The geometry is where this shoe earns its keep. Salomon’s reverse camber rocker rolls smoothly through the stride, especially as pace picks up, and the Energy Blade layer at the bottom of the midsole stiffens the rocker and keeps it rolling. The plate reads more as structure than snap: you do not get the propulsive punch of a carbon-plated racer like a Vaporfly, but if you like a rocker stride, the ride is genuinely pleasant. It feels most comparable to a Carbon X 2, with slightly softer foam.

Outsole and Durability

There is a generous amount of rubber on the outsole, more than on many other race day shoes. It is not full coverage, since there are exposed foam sections, but the pads cover the toe area well and grip is solid, with comfortable, secure ground contact throughout testing.

That rubber coverage is a real argument for the shoe: it points toward more miles than the typical super shoe, which softens the price conversation somewhat.

Specs, Weight and Price

The stack comes in at 35mm in the heel and 26mm in the forefoot for a 9mm drop. Weight depends heavily on size: a sample that was likely mislabeled weighed 8.5 ounces (242 grams), while a men’s size 6 equivalent to a women’s 7.5 came in at 6.9 ounces (196 grams). Either way, it is not the lightest super shoe available.

Price is where things get awkward. At $225, it costs like a top-tier super shoe despite not having a carbon plate and carrying a bit of extra weight. You do get S/Lab styling and likely above-average durability in return, but it is a hefty price and buyers will need to decide what that trade-off is worth to them.

Who Should Buy It

This is a versatile option if you genuinely like a rocker design. Long runs of 16-plus miles cruised comfortably, and double-digit efforts felt great throughout, with a nice cushioned feel. What it lacks is that bouncy trampoline sensation of an AlphaFly or an obvious next gear at faster paces. One tester also found themselves wanting the comfort of a more forgiving daily trainer the following day.

If you want the softest, most comfortable rocker shoe in this class rather than the punchiest, the Phantasm CF makes a strong case. If you need maximum propulsion for race day, look elsewhere.

Conclusion

The Salomon S/Lab Phantasm CF is a well-cushioned, rocker-focused race day shoe with excellent rubber coverage and a comfortable ride over long distances. Its weaknesses are a finicky tongue, a slightly loose heel fit, and a $225 price that does not quite match its second-tier performance. For rocker fans who value comfort and durability over carbon-plate snap, it is an easy shoe to like.