Symmetrical, lightweight, triangular monoprene bead form. Retains shape when swimming, exercising or lounging. Not affected by chlorine or salt water. Symmetrical triangular shape that is lightweight and quick-drying. A thin layer of vented polyethylene foam provides support and shape. Molded with polyester spacer fabric that dries quickly. Filled with lightweight monoprene beads that do not absorb water and dry quickly.