The IS-3 block tank was designed in a scale of 1:28 and imitates the extremely characteristic rounded shapes of its inspiration. The model, consisting of over 1,100 elements, is 35.5cm long when built.

Under the removable turret there are accurately reproduced interior elements. A brick replica of the W-11 tank engine can be placed under the service hatch. There are also bricks with periscopes printed on the turret. The very difficult shapes of the tank have been reproduced using the latest elements created for the COBI Historical Collection! The tracks work while moving the tank and the turret also rotates and the barrel raises and lowers! The set includes a figure of a Soviet tank driver in a characteristic navy-blue suit.