Saddles
Used road saddles need to support your sit bones without creating pressure on soft tissue, and width is determined by sit bone measurement rather than guesswork. Fizik, Selle Italia, Specialized and Prologo dominate the market with different shapes for different pelvic positions. Fit matters more than price — the right saddle eliminates numbness, the wrong one makes every ride miserable.
What width saddle do I need?
Sit bone width determines saddle width. Measure by sitting on corrugated cardboard and measuring the distance between the two deepest impressions, or get measured at a bike shop. Most riders fall between 110-145mm sit bone width, and saddle width should be roughly sit bone width plus 20-30mm. Too narrow and you sit on soft tissue; too wide and you chafe on the inner thighs. Fizik uses its Spine Concept (snake, chameleon, bull) to match saddle shape to riding flexibility, while Specialized uses Body Geometry fit data.
Flat, curved or short-nose?
Flat saddles (Fizik Arione, Prologo Scratch) suit riders who move around on the saddle, taking different positions for climbing, descending and cruising. Curved saddles (Fizik Antares, Selle Italia SLR) lock the rider into a fixed position, which is better for consistent pedalling. Short-nose saddles (Specialized Power, Fizik Argo, Selle Italia SLR Boost, PRO Stealth) reduce soft-tissue pressure for riders in aggressive positions and have become the default for road racing and time trialling. Nose length affects thigh clearance during pedalling and the range of positions available.
How much padding do I want?
Less padding is generally better for road riding, as thick padding compresses and creates pressure points over time. Racing saddles use minimal foam over a flexible shell, while endurance saddles add slightly more padding for longer stints. The saddle is one contact point among three, so read it alongside your pedals and bar thickness rather than in isolation.
Steel, titanium or carbon rails?
Rail material affects weight and compliance. Steel rails are heaviest and cheapest, manganese alloy is mid-range, titanium saves weight and adds flex, and carbon rails are lightest but have minimal compliance. Carbon-railed saddles on carbon seatposts can feel harsh, so consider titanium rails for the best comfort-to-weight ratio — a cheaper route to comfort than chasing it through thicker bar tape alone.
What should I check buying used?
Saddles are heavily personal, and buying used lets you try expensive models cheaply. Check the shell for cracks by flexing it gently and inspect the rails for bending, which points to crash damage. Cover wear is cosmetic unless the foam is exposed and deteriorating. Carbon rails should be checked for surface damage at the clamp points, as over-tightened seatpost clamps can crush them. A used Fizik Arione or Specialized Power in good condition is functionally identical to new, which is true of much of the used component market.