- All-year-round model, because of material choice suitable to wear in any season
- Model that can change into winter or summer version due to modularity or upgradability
- Size adaptability, like the African shoe that is seen in standardization and compatibility.
Again modularity can be used to either make the slippers into a perfect fit for all seasons, or when a new model or trend passes by that the user can only replace the top instead of the whole slipper. The adaptability in combination with modularity can than now also be used for ease of repair. When the sole is broken only the sole can be replaced instead of everything.