Banzai Splash ?N Go Mermaid Wind-Up Water Toy - 3pack. Splash and swim with a mermaid! Wind up your mermaid friend and watch her go. As her tail flutters through the water, your mermaid will dance, splash and swim through the water. Make a splash all summer long! No batteries required; just wind up and go. The mermaids are posable with articulated arms. This is a three-pack available with three different mermaid styles. The Mermaid Wind-Up toys are perfect for the pool or can be used for bath time fun! 2.25 in L x 1.5 in W x 7.25 in H swimming mermaid.