Indestructible (adjective)

1. Impossible to destroy or damage beyond repair; extremely durable.
2. Difficult or impossible to break or damage.

Origin:

Early 17th century: from latin indestructibilis, from in- 'not' + destruct- 'destroy' + -ibilis 'capable of'.

Examples:

1. The indestructible cell phone case protected the device from damage.
2. The indestructible material was used to construct the building.
3. The indestructible object remained intact after being dropped from a great height.
4. The indestructible pen was guaranteed to last a lifetime.
5. The indestructible toy was a hit with children because it could withstand rough play.