Find the right bike saddle by sit-bone width, riding posture, and gender, with ergonomic, cutout, and performance picks.
Open the saddles calculatorSaddle width should match sit-bone width plus 20–30 mm depending on riding posture and flexibility. Sit-bone width can be measured using a pressure mat or estimated as 65–70 mm for most adults. Road saddles tend narrower (120–155 mm); MTB and commuter saddles wider (150–180+ mm). Available widths within a product line typically span 142–154 mm or 155–168 mm.
Verified on Amazon today — prices and availability may vary.
Fizik
Available widths 142, 154 mm; fits sit-bone 120–145 mm
Selle Italia
Available widths 155, 168 mm; fits sit-bone 130–155 mm
Wtb
Available widths 142, 155 mm; fits sit-bone 130–155 mm
Brooks England
Fixed width 155 mm; fits sit-bone 130–160 mm; requires break-in period (50–100 miles)
Ergon
Available widths 130, 140, 150, 160 mm via sit-bone width measurement; fits sit-bone 110–170 mm
Selle Royal
Available widths 145, 160, 175 mm; fits sit-bone 130–175 mm
Smp
Available widths 150, 163 mm; fits sit-bone 125–160 mm; pro peloton standard
Prologo
Available widths 148, 165 mm; fits sit-bone 120–160 mm
As an Amazon Associate we earn from qualifying purchases. This helps support our free calculators.
Persona-tailored saddles guides with fit, style, and feature notes for how you actually ride.
Your frame size changes what fits — get the bike right and the accessories will follow.