Kesäisistä
Kesäisistä is a Finnish adjective meaning "summery" or "of summer." It is the essive plural form of the adjective kesäinen, which also means summery. The essive case in Finnish indicates a state of being or a role. Therefore, "kesäisistä" describes multiple things or people that are in a summery state or are characterized by summer.
The word can be used in various contexts. For example, one might speak of "kesäisistä päivistä" (summery
The use of "kesäisistä" implies a collection or plurality of items or concepts that share the quality