Learn Italian: Cerco un materiale che sia facilmente lavabile in lavatrice. - I am looking for a material that is easily washable in the washing machine.

It is created by taking the stem of the verb lavare (to wash) and adding the suffix -abile. This suffix functions exactly like the English -able or -ible, turning an action into an adjective that means capable of being done. For verbs ending in -ere and -ire, the suffix is typically -ibile.

Why does the sentence use the subjunctive sia instead of the indicative è?

The subjunctive is used in relative clauses when the noun being described is indefinite or hypothetical. Because you are looking for un materiale (a material) with specific qualities and do not know if it actually exists yet, you use che sia. If you were looking for a specific, known fabric, you would use the indicative: Cerco il materiale che è lavabile.

Why do we say in lavatrice without a definite article?

When referring to the method or function of common household appliances, Italian often uses the simple preposition in rather than the articulated preposition nella. Saying in lavatrice treats the washing machine as a general process or mechanism (like the English phrase machine-washable), rather than pointing out a specific physical machine.

Could I say sto cercando instead of cerco for I am looking for?

Yes, sto cercando emphasizes that the search is happening right at this exact moment. However, the simple present cerco is very naturally used in Italian for ongoing searches, especially in retail situations like telling a shop assistant what you want to find.