This is the 3229th most frequent Polish word.
sportowej
"Sportowej" means "sports" or "sport-related," as a feminine singular or plural genitive/dative/locative form in Polish.
Here, 'sportową' is an adjective in the instrumental singular feminine form, describing the bag as related to or for sports.
Mam nową torbę sportową.
I have a new sports bag.
In this sentence, 'sportową' functions as an adjective in the accusative singular feminine form, describing the type of clothing being related to sports.
Kupiliśmy odzież sportową w sklepie.
We bought sportswear at the store.
Although not the exact word 'sportową', this sentence highlights the adverbial form 'sportowo', derived from 'sportowy,' to indicate that the jacket has a sporty appearance.