Kids will go quackers over these Do It Yourself Rubber Duckies! Add your own design to make these DIY crafts as unique and special as you! (1 dozen per unit) 2 Vinyl. We recommend using permanent markers, sold separately online. Duckies do not float upright.Age Recommendation:Ages 5 & Up: Containing medium-sized pieces with the occasional angular edge, these lightweight to sturdy crafts may require some assembly such as stringing beads or gluing items to create a 3-dimensional project.