This is a 3D-printable model of football/soccer shinguards/pads. The shinguards are pretty small, just like professional football players like it. The shinguards feature some holes for better ventilation.
The black part in the pictures is the hard shell that can be 3D-printed to create your own shinguards. You can print it in an FDM-printer, positioned as you can see in the photo.
For the white part, you can use a layer of foam material. Step 1: Press the foam material against the inside of the hard shell and draw the outline of the shell onto the foam with a pencil. Step 2: Cut out the shape of the shinguard. Step 3: Glue the foam to the hard shell. Step 4: Remove the interior holes by cutting through the holes of the hard shell with a cutter