They come in various widths and thicknesses, are made of various types of plastics, such as polyamide, ABS or acrylic, and these features determine their stiffness. Thanks to their design, they are resistant to water, moisture and sweat. Products equipped with them can be washed without having to remove them from the orthosis. Our plastic stays work only in one direction, perfectly stabilize the laterally protected part of the body, adjusting to it at the same time and have a memory function, thanks to which they always return to their original shape. This function causes the stays in the orthosis to stabilize the swollen limb immediately after the injury and after the swelling has come off. The plastic stays cannot bend and that is why, they cannot correct the body posture or the secured joint.