There is a lot of science and engineering involved in creating a seat that suits you and feels comfortable. When you are shopping, you may hear some new terms. Here is a simple guide to car seat parts, all terms you may encounter in your search.
1. Curvature
The curvature of the seat determines its cross-sectional shape. But this does not only represent the width of the seat. The curvature reflects the angle at which the bone structure intersects the seat. Each bicycle seat has a specific curvature design.

2. Introduction
The outline of the seat outlines its side-view shape, which determines the extent of your forward and backward movement on the seat, and may also affect the degree of rotation of your pelvis on the seat.

3. Side curvature
The side curvature of the seat determines the shape of its top view. It can affect your specific front and rear position on the seat surface.

4. Rails
The rail of the seat is where the seat is connected to the seatpost of the bicycle. It may be made of alloy or lightweight carbon fiber. You can use it to move the seat toward the front or rear of the bicycle to adjust the fit on the seat.

5. Hollow
The seat with a hollow, that is, there is no material in the middle of the seat, and it is hollow. The hollow design can relieve the pressure of the seat on the soft tissue area of ​​the body. The contour relief zone (CRZ) is the foam depression on the surface of the car seat, which usually has the effect of hollowing out, but can provide a great support effect.