3 years & up. The Rainbow Gel Alpha Boats and Number Fish contain gel-like beads in 7 colors: red, orange, yellow, green, light blue, dark blue, and purple. The jelly-like, squishy texture makes these perfect for sensory activities. The Alpha Boats have uppercase letters on one side and lowercase on the other. The Number Fish have numbers 0-20 on one side and the corresponding dots on the other. Both sets contain a loop at the top for hanging or displaying. Boats measures 4.1"L x 3.6"W and Fish 5.9"L x 3.1"W.