The Cressi Octopus Compact uses the same casing as the XS Compact  model made from special hi-tech polymers, the only difference being the yellow front cover.

The Cressi Octopus Compact PRO uses the same casing as the XS Compact  model made from special hi-tech polymers, the only difference being the yellow front cover.

Octopus Ellipse uses the same casing as the Ellipse model made from special hi-tech polymers, the only difference being the yellow front cover.

The Cressi Octopus XS uses the same casing as the XS2 model, the only difference being the yellow front cover. The hose is also yellow and is longer (100 cm against the standard 76 cm).