This is the 8395th most frequent Polish word.
plażowego
"Plażowego" means "beach-related" or "beach-like" in English.
Here, 'plażowego' describes the type of hat, specifically one meant for use at the beach, functioning as an adjective.
W sezonie letnim korzystam z mojego kapelusza plażowego.
In the summer season, I use my beach hat.
In this sentence, 'plażowego' qualifies the type of sports equipment, indicating it is intended for beach activities.
Kupiłem nowy zestaw plażowego sprzętu do tenisa.
I bought a new set of beach tennis equipment.
Here, 'plażowego' is used to describe the life associated with the beach, acting as an attributive adjective.