Calvin's 3x3x5 Semi-Super Cuboid Series was co-designed by Aleh & Evgeniy.
The first production batch included: Semi-Super cuboid
These enhanced 3x3x5 cuboids have embedded circles as part of 2 opposite flat faces. All faces are free to turn, include the extended layers, flat faces and circle faces. The extended pieces can move to the circle faces and make the turn. With this new change, the cubes can be transformed into many other different shapes.

• See at Puzzle Master