Invisalign a set of clear teeth straightening aligners, these aligners are removable and are custom-made for your teeth, these removeable aligners are nearly invisible so they are also known as the invisible teeth straightening aligners which are intended to gradually move your teeth into the ideal position over time. Patients looking to straighten their teeth without the unsightly braces of the past are drawn to transparent teeth aligners because it provides a discrete and comfortable substitute for traditional metal braces.