Calvin's 3x3x5 Cuboid Cube;

Calling rotational puzzle enthusiasts! The Calvin's 3x3x5 Cuboid Puzzle is the larger cousin of the traditional puzzle cube. With six colors, five layers and countless permutations this is the perfect addition to any collection. Twist, turn and rotate to success – but be careful! Measuring 3.75" on its longest side and 2.25" on its shortest, this unique puzzle changes shape with every contortion.