This is the 13746th most frequent Turkish word.
kılıflar
"Covers" or "cases" (plural form).
The word 'kılıflar' refers to protective covers or cases for phones in this context.
Telefonlar için güzel kılıflar aldım.
I bought nice cases for the phones.
Here, 'kılıflar' signifies protective or aesthetic covers designed for books.
Kitaplarımı korumak için özel kılıflar tasarlıyorum.
I am designing special covers to protect my books.
In this sentence, 'kılıflar' generally refers to covers that enhance the appearance of an item.