JellyBeadZ Brand Crystal Clear Water Beads - 4 Ounces About 6,800 BeadZ JellyBeadZ is a #1 seller on Amazon Colorfast, Non-Toxic, Enviromentally Friendly Simply add the beads to water and watch in amazement as they expand! The beads take 8-12 hours or so to fully grow, and they are fun to bounce, roll, and throw! Available in 12 colors.