vedenkestävinä
vedenkestävinä is the genitive plural form of the Finnish adjective vedenkestävä, which translates to "water-resistant" or "waterproof". This grammatical form is used when referring to multiple items or substances that possess the quality of resisting water.
In practical terms, something described as vedenkestävinä would have undergone testing or been manufactured to a
The genitive plural case is employed in Finnish when the noun or pronoun that the adjective modifies