With the exception of overlap liners, all above-ground pool liners come with some sort of connector known as a liner bead. Liner beads are reinforced strips of stiff vinyl that are attached to the top of the pool liner, which connect the liner to the top of your swimming pool wall. The most common bead types are the Standard Bead and the J-Hook. But have you ever heard of a Unibead liner? Our video explains the benefits of the Unibead liner below.