Saddle Parameters

The 3d model of each saddle is a combination of your anatomy's geometry and a number of user-adjustable parameters defined below. You can adjust the parameters and observe their effects on the model in your dashboard any number of times before submission.

2d outline

A saddle's two dimensional outline defines its horizontal boundary as viewed from above. It serves as a template and is used together with other input parameters to generate the final 3d saddle model. This outline doesn't impact comfort and can therefore be selected based on personal preference. The list of all saddle outlines can be found here.

View from above: a saddle's 2d outline.

Side to mirror

To improve overall aesthetics, mitigate the issue of cracks in the foam, and to avoid aggravating natural bias (i.e. we tend to lean to one side), we mirror one side of the imprint (left or right) onto the other to attain symmetry. If crack(s) are present, select the side without one. Otherwise, either side works.

View from above: the left or right side of the saddle can be mirrored to achieve symmetry.

Nose tip curvature

The tip of the saddle nose can be curved downwards, which may help with shorts/bibs snagging on the nose, or for aethestic purposes.

View from right: (a) saddle with straight nose, (b) saddle with curved nose tip.

Center channel / cutout

We provide the option to lower the center region of the saddle (fore to aft). This provides relief for those with perineum or soft tissue concerns. The normal channel has a depth of 7.5mm and a width of 30mm.

A channel running along the saddle center, tapering off towards the front.

The second option provides significant relief and includes both a 40mm wide, 10mm deep channel as well as a cutout. The cutout dimensions (width and length) varies based on the anatomy as well as the movement fore/aft option selected and are displayed as part of the output.

Saddle with a channel and a cutout.

Imprint Analysis

To help beginner cyclists decide whether a channel or cutout is necessary, we've introduced an anatomy analysis tool that looks at your imprint and displays the likelihood of you having perineum related issues. There are two caveats:

  1. The analysis is more accurate when more of the anatomy's geometry is captured. If we barely sit on the foam, then less is captured and the analysis will be less accurate.
  2. Due to differences in anatomy, the analysis for females will also be less accurate.
This analysis and its result is triggered by clicking on the 'eye' icon in the dashboard.

Adjust saddle wings

The saddle wings' widths can be adjusted. This should be done only if the resulting saddle appears unacceptably narrow or wide.

Saddle without (a) and with (b) wings reduced in width.

Sloped rear

The rear of the saddle can be flat (a) or have a slope added (b). Adding a slope may help keep the body in position while pedaling instead of slipping backwards.

(a) saddle with a flat rear, (b) with a slope added.

Hip rotation

The default saddle outlines taper rapidly from the sitbone region to the front. While this reduces the likelihood of the inner thighs rubbing against the saddle, it limits rami support when we rotate our hips to adopt more aggressive postures.

More gradual tapering results in V-shaped saddles, our article on [ hip rotation ] discusses how this type of saddle should be used.

The default option works well in general. The 'always upright', or minimal option, is suitable for those who sit primarily upright. The 'TT/tri' option is good for time-trial/triathlon purposes.

View from above: (a) The default saddle tapers rapidly from the sitbone to the saddle front. (b) This tapering can be made more gradual for rami support.

Rider weight

The carbon fiber layout of the saddle is adjusted based on rider weight. This provides the appropriate amount of saddle flex improving comfort over long distances.

Two weight ranges are currently available: less than 180lbs, and between 180 and 240lbs. If your weight fluctuates between the two ranges, pick the lower range.


Side view of tall vs short rails.

7x9 vs 7x10 carbon rails

Our carbon rails are oval (cross-section: 7mm wide, either 9 or 10mm high). All top-down rail clamps should work, while specific 7x9 or 7x10 clamp ears for side-loading clamps are necessary (check with seatpost manufacturer). Our 7x9 rails have a weight limit of 180lbs (80kg), while the 7x10 ones have a limit of 210lbs (95kg). Metal rails have a limit of 240lbs (110kg).

Tall vs short rails

Tall rails have height similar to other saddles in the market. They provide additional clearance during installation and may be necessary in cases where the seatpost bolts are long. Short rails result in a lower saddle stack height which may be more aesthetically pleasing. All our metal rails are tall.

A seatpost requiring tall rails: long bolts protruding upwards.


There are two types of saddle graphics: angled, and vertical. Both include three elements: a team logo, nationality, and rider name. The difference is the location of the elements: for angled, the elements are situated on the right saddle wing whereas they are arranged in a stripe across the saddle center for vertical.

(i) Angled graphics on the right saddle wing, (ii) vertical graphics on saddle center.

(a) Team logo: You provide the URL (e.g. of a publicly accessible image which will be inserted here. This URL can be obtained by right-clicking on the image in a web browser and selecting the option similar to "copy image location".

To test, paste the copied URL in a new browser window. Only the image itself should appear. In the case of online services such as Dropbox, the image may be surrounded by a service-specific window, which will cause the image retrieval to fail.

To use your own image, you can upload to a sharing/social site like Facebook or Google Photos, then use the URL from there.

Depending on the aspect ratio, the logo may be rotated for a better fit. It will then be scaled proportionally to fit the available vertical space.

If the resulting image does not fill the width of the region, the remaining background will be filled with the image's edge pixels. For instance, using the image

will result in

(b) Nationality: The flag corresponding to your nationality appears here.

(c) Rider name: Your name appears here. For instance, if you are John Smith, "J. Smith" is an option.