Review of the Specialized Power Expert Saddle with Mirror

In addition to its Power and Romin saddle lines featuring 3D-printed Mirror technology (available at the S-Works and Pro levels), Specialized launched a third-tier model a few months ago with a slightly softer shell and partial use of this innovative padding process. The Power Expert Mirror is a mid-range saddle that offers a high level of comfort, regardless of the surface on which we tested it.

By Guillaume Judas – Photos: ©3bikes.fr/DR

In 2020, Specialized launched the first Power saddle (short-shaped with a widened crescent, a shortened nose, and a wide central groove) in the S-Works line (with a carbon shell and rails) equipped with revolutionary padding technology. In essence, instead of traditional foam placed between the shell and the cover, there is a complex 3D-printed matrix made from liquid polymer, creating a framework of thousands of independent cross-braces capable of deforming very precisely and very locally. This technology allows the saddle to adapt to each rider’s anatomy without causing long-term deformation of the structure, since shock absorption is achieved through the multitude of small hollow sections within the matrix. The support and flexibility of the seat offer adjustable density and pressure distribution that are impossible to achieve with traditional foam.

A few months later, the American brand applied the concept to its Romin Evo S-Works saddle model (same product tier, but with a slimmer, more elongated shape), then to the Pro-level Power and Romin Evo models (with titanium rails). Finally, in the summer of 2023, they launched this Power Expert—a more affordable model that’s no less comfortable.

More Accessible Technology

For the Expert-level Power—the third tier in the lineup after S-Works and Pro, for those who might be confused—3D-printed technology is used only partially, as a complement to more traditional foam. You can make out the honeycomb structure pattern beneath the saddle’s traditional cover, right where the sit bones normally rest. This strategic placement strikes a good balance between keeping costs down and ensuring optimal comfort, especially since the fact that the 3D matrix is hidden by the saddle cover prevents the buildup of mud and other debris. This makes the Power Expert Mirror suitable for use on the road, on gravel, or on a mountain bike.

The saddle naturally features the now-famous Power shape, with four width options to accommodate all body types. While the 143- and 155-mm widths are standard for road bikes, the 130- and 168-mm options open up new possibilities—for pure touring or e-biking with the widest model, or for mountain bike trials or downhill riding with the narrowest model (so the bike remains perfectly maneuverable between the rider’s legs).

On the Power Expert, the shell is slightly more flexible than on the Power S-Works and Pro models. It therefore deforms slightly more under the rider’s weight and requires long-term monitoring to ensure that saddle position adjustments do not sag over time. That said, this relative flexibility also provides additional comfort on the roughest terrain, such as gravel riding, for example. The saddle’s structure is complemented by hollow titanium rails—sturdy and relatively lightweight—ensuring that the Power Expert remains a top choice, offering an excellent balance of comfort, weight, and price at €180.

Finally, like all Power saddles, the Expert Mirror features a long central cutout, designed to optimize blood flow to sensitive arteries. In practice, this cutout never compromises seating stability, and the edges are perfectly smooth, unlike some competing products that can sometimes feel sharp in this area. The Power saddle is designed to minimize unpleasant tingling and urinary issues caused by poor support after several hours on the bike, and it’s clear that, overall, the design is highly effective.

The Power Expert Mirror Saddle in Use

To test this saddle, three cyclists with different riding styles put it to the test on three different types of bikes. Rarely has a saddle model received such unanimous praise, whether for 5-hour road rides, gravel rides on gravel paths, on a time trial bike in an aggressive forward position, or with a female beginner cyclist who had just discovered the first minor discomforts of regular cycling! Although she ultimately opted for another saddle model more specifically designed for the female anatomy (the Power Comp Mimic), she was initially able to appreciate the difference in comfort between her first saddle and the Power Expert Mirror, which paved the way for her first 100-km ride.

Overall, for a saddle whose primary goal is comfort, the relative firmness of the seat was remarkable, helping to prevent chafing and other irritations over the long term. While the shell is certainly more flexible than that of a competition saddle, there’s little sagging or “bouncing” sensation while pedaling—except for the heaviest riders (over 75 kg).

As is always the case with this type of saddle, adjustments can be a bit tedious, particularly when it comes to saddle setback (forget about using the nose of the saddle as a reference, since it’s very short) and the angle relative to the ground. Fortunately, a highlighted mark in the middle of the saddle provides a reference point that can be very useful later on. And once the saddle is properly adjusted, the feeling of stability is very much present. This sensation is reinforced by the saddle’s surface, which significantly reduces the risk of slipping, even in the position used on a time trial/triathlon bike. Be careful when adjusting the saddle on this type of bike, though, because the nose of the Power Expert Mirror saddle is very firm and isn’t really designed for prolonged sitting without causing discomfort. Again, to ensure effective pelvic support and avoid feelings of pressure or compression in the perineum, you’ll need to carefully adjust the saddle’s position and angle.

Finally, when tested on gravel with the same settings as those used on a standard Power Pro, the Power Expert Mirror stood out as the kilometers went by, allowing me to appreciate the benefits of a slightly softer shell and, above all, a seat that perfectly conforms to my sit bones—which are particularly sensitive, especially on the right side.

I’m a regular user of Power saddles; I appreciate their shape and dimensions, and between the Power Pro, the Power S-Works Mirror, and the Power Expert Mirror, the only differences are the shell’s stiffness and the padding technology used. Once in position, the differences you can feel are subtle and become most noticeable as the kilometers go by. As a result, I can confirm that the Power Expert Mirror is an excellent saddle—extremely versatile—that perfectly balances comfort, performance, and durability. You can buy it with complete confidence.

The Specialized POWER EXPERT MIRROR saddle at a glance…

Pros: comfort, build quality, versatility, available in four widths
Cons: shell is a bit too flexible for riders weighing over 75 kg

Rails: hollow titanium (7 mm) – Cover: microfiber – Padding: PU foam + 3D-printed inserts – Shell: carbon-reinforced nylon – Body Geometry design – SWAT-compatible mounts molded into the saddle shell, providing a storage solution – Dimensions: 244 x 143 mm – Available in: 130, 143, 155, and 168 mm wide – Weight: 224 g (143 mm) – Price: €180