Bicycle Saddles Compared: Ergon SM Pro vs Ergon ST Core Evo Women's vs Selle Italia WATT Triathlon

Your saddle is the single most important contact point between you and your bike — and the wrong one will end a long ride far sooner than tired legs ever would. Whether you're a road cyclist, a touring rider, or a triathlete, the right saddle is specific to your discipline, your anatomy, and how you sit on the bike. Our Bicycle Saddles collection covers the full spectrum of performance and comfort options. Today we're comparing three premium picks: the Ergon SM Pro Men's Saddle, the Ergon ST Core Evo Women's Touring Saddle, and the Selle Italia WATT Gel Superflow Triathlon Saddle.

Ergon SM Pro Men's Bicycle Saddle — The Road & Trail Pressure-Relief Specialist (£149.91)

Ergon is one of the most respected names in ergonomic cycling equipment, and the SM Pro is their flagship men's saddle for road and trail riding. The defining feature is the OrthoCell-Inlay technology — a pressure-distributing insert that spreads your weight evenly across the sit and pubic bones, eliminating the hot spots and numbness that plague riders on longer efforts. The Y-shape design gives total freedom of movement while keeping your bone structures properly supported throughout the pedal stroke.

The deep relief channel with a precise cut-out protects soft tissue on extended rides, and the flat, even contact area with high-end padding suits riders who move around on the saddle rather than staying locked in one position. Optimised for a sit-bone width of 9–12cm. At £149.91 it's the most accessible of the three and the most versatile — equally at home on a road bike, gravel bike, or hardtail MTB.

Best for: Road cycling, gravel, hardtail MTB, riders who suffer from saddle pressure or numbness
Key technology: OrthoCell-Inlay pressure distribution, Y-shape, deep relief channel
Sit bone width: 9–12cm
Gender: Men's
Price: £149.91

Shop the Ergon SM Pro Men's Saddle →

Ergon ST Core Evo Women's Touring Saddle — The Long-Distance Women's Specialist (£171.13)

The Ergon ST Core Evo is built for one specific purpose: keeping women comfortable over very long distances. The TwinShell floating design is the engineering centrepiece — the shell flexes and moves with your pelvis rather than being rigid, actively dampening vibrations from the road or trail. The core is made from BASF Infinergy (E-TPU), a closed-cell particle foam that provides exceptional energy return and vibration absorption over hours of riding.

The saddle is anatomically designed for women's pelvic geometry, with a pronounced relief channel that protects soft-tissue areas during extended seated efforts. The microfibre cover and orthopaedic comfort foam padding complete a package that's genuinely engineered for all-day comfort rather than just short rides. CroMo rails provide reliable durability. At £171.13 it's the right investment for any woman who rides long distances and has struggled to find a saddle that works.

Best for: Women's touring, long-distance road cycling, bikepacking, e-bike touring
Key technology: TwinShell floating design, BASF Infinergy E-TPU core, pronounced relief channel
Sit bone width: M/L (9–12cm)
Gender: Women's
Price: £171.13

Shop the Ergon ST Core Evo Women's Saddle →

Selle Italia WATT Gel Superflow Triathlon Saddle — The Race-Day Performance Saddle (£174.91)

Triathlon demands a completely different saddle geometry to road or touring cycling. In an aggressive aero position, your weight distribution shifts forward, and you need a saddle that supports that position without causing the soft-tissue pressure that would compromise your run off the bike. The Selle Italia WATT Gel Superflow is engineered precisely for this: the Superflow cutout relieves pressure in sensitive areas during long, intense efforts in the aero position, while the integrated gel padding layer absorbs road vibrations to keep you fresher for the run.

The TI 316 rails are 10mm longer than standard, giving a wider range of fore-aft adjustment so you can dial in your aerodynamic position precisely. At 133 x 255mm it's a narrow, performance-focused profile. Selle Italia is one of the most trusted names in competitive cycling saddles, and the WATT is their dedicated triathlon weapon. At £174.91 it's the right saddle for any triathlete serious about their bike split.

Best for: Triathlon, time trial, aggressive aero positions, competitive cyclists
Key technology: Superflow cutout, integrated gel padding, extended TI 316 rails
Dimensions: 133 x 255mm
Gender: Unisex (performance-focused)
Price: £174.91

Shop the Selle Italia WATT Triathlon Saddle →

Side-by-Side Comparison

Which Should You Choose?

The right saddle depends entirely on how and where you ride. For men who want a versatile, pressure-relieving saddle that works across road, gravel, and trail riding, the Ergon SM Pro is the most accessible and adaptable choice. For women who ride long distances and want a saddle specifically engineered for female anatomy and all-day comfort, the Ergon ST Core Evo is the standout option — the TwinShell floating design is genuinely different to anything else at this price. And for triathletes and time triallists who need to hold an aggressive aero position for extended periods, the Selle Italia WATT Gel Superflow is the purpose-built race tool that will keep you comfortable through the bike leg and fresher for the run.

Browse the full range in our Bicycle Saddles collection and find the saddle that fits your riding.