A recumbent seat doesn't care whether the saddle is labeled for men. It cares whether the rear width matches your sit bones and whether the front clears your thighs and perineum. Bisaddle makes that fit adjustable across a 100 mm to 175 mm range, so you can match the saddle to your own sit bone spacing instead of a label someone picked from a shelf.
- Rear width that matches your sit bones
- Front width that clears your thighs and perineum
- Independent angle for each half
On an upright bike, the pelvis tilts forward and the perineum takes some of the load. Lean back against a recumbent backrest and that changes. The upper body weight shifts backward. The seat base now carries your sit bones and the backs of your thighs. A seat base too narrow digs its edges into the glutes. One too wide lets the hips rock with every pedal stroke.
The front of the seat still matters. When you extend a leg, the front can press up into the perineum. The pressure is lower than on a road bike, but it continues for hours. A long fixed nose adds material where you don't want it. Pull the two front halves of a Bisaddle inward and you create a narrow split nose that keeps that area clear.
Sit Bone Spacing, Not a Gender Average
Bike shops often split saddles into men's and women's models because average sit bone spacing differs. Men average narrower sit bones and women average wider. Averages hide the range. A man with wide sit bones and a woman with narrow sit bones can need the same rear width. On a recumbent, the pelvis also rotates backward. That rotation changes the effective width you need, even if the label says men's.
Measuring your own sit bones takes a few minutes. It gives you a number you can adjust to. Bisaddle's width range from 100 mm to 175 mm covers adult male sit bone spacing without forcing a group average.
Measure Before You Adjust
Take a piece of corrugated cardboard and place it on a hard chair. Sit on it, lean back to the same recline angle as your recumbent, and hold that position for a minute. Stand up, find the two deepest depressions, and measure between their centers. That number is your sit bone spacing.
Set the Bisaddle rear width so each sit bone rests near the center of its own half. Too narrow and the inner edges press into the perineum. Too wide and the outer edges push the thighs outward and cause hip rock. You want the load through bone, not soft tissue.
Using the Two Halves
Bisaddle's two halves slide and pivot independently. Sliding changes rear width. Pivoting lets you angle the rear supports to match the slope of your glutes in the reclined position. A fixed saddle may sit level while your pelvis sits rotated, and that creates a pressure edge. Angling the rear halves outward or inward follows the glutes and spreads the load.
The front halves adjust separately from the rear. Pull them inward until the inner thighs clear. You can also tilt the whole saddle downward at the front. On a recumbent, a level or slight downward tilt reduces pressure on the pubic area when you extend your legs. Because each half adjusts independently, you can also correct for a leg length difference by setting one side slightly higher or angled differently.
Blood Flow When You Cannot Stand
Recumbent riders cannot stand out of the saddle to relieve pressure. The reclined position keeps you seated for hours, and that makes blood flow a bigger concern than on an upright bike, where a rider can stand on climbs. A fixed long nose presses on the perineal arteries when the front of the seat is too wide or too high. A narrow split nose leaves an open channel.
Bisaddle's adjustable gap lets you set the front width to the minimum needed for stability. The split removes material from the perineal area, so the nerves and arteries don't get squeezed. The rear still supports the sit bones, so stability doesn't suffer.
Setup Sequence
- Measure sit bone spacing with cardboard while leaning back at your recumbent recline angle.
- Slide the Bisaddle rear halves to that width, measured from sit bone center to sit bone center.
- Pivot the rear halves so each one matches the slope of the glutes.
- Pull the front halves inward until they clear the inner thighs and perineum.
- Tilt the saddle slightly downward at the front if you feel pubic pressure when extending your legs.
- Test ride. If you feel numbness, widen the gap slightly. If you feel hip rock, narrow the rear width slightly.
Each adjustment is reversible. You don't need a new saddle when your recumbent seat angle changes or when you move the saddle from one bike to another.
The Saint's 3D Lattice
Bisaddle's Saint model adds a 3D-printed polymer lattice over the adjustable base. The lattice flexes under the sit bones and stays firmer in the center. On a recumbent, the surface follows the adjusted shape instead of fighting it. The base still does the fit work. The lattice does the cushioning work without thick foam that can compress and push back into soft tissue.
A men's recumbent saddle needs to match your sit bone width and your recumbent hip angle. Bisaddle's two sliding, pivoting halves do that across a 100 mm to 175 mm range. Measure once, adjust in minutes, and change the fit whenever your riding position changes.
