Learn Italian: Il materiale stampabile di questo vestito costa tanto. - The printable material of this dress costs a lot.

To form adjectives meaning "capable of being done," you generally drop the infinitive ending of the verb and add a suffix. For -are verbs like stampare (to print), you add -abile, creating stampabile (printable). For -ere and -ire verbs, the suffix is usually -ibile (like leggere becoming leggibile).

What does stampabile refer to when talking about a vestito?

While stampare traditionally refers to printing on paper, it is also the verb used for 3D printing (stampa 3D) and textile printing. In this modern context, materiale stampabile likely refers to either a fabric designed to have patterns digitally printed onto it, or a flexible filament used to 3D-print a garment.

Why doesn't tanto change its ending to agree with any of the nouns in the sentence?

Because here tanto is functioning as an adverb modifying the verb costa (it costs a lot), rather than as an adjective describing a noun. Adverbs in Italian are invariable, so tanto will always keep its -o ending when used this way, regardless of the gender or number of the subject.

Could vestito mean something other than "dress" here?