Japanese crochet book exclusively dedicated to summer hats. Introducing various designs such as wide-brimmed style, casual bucket hats, berets, etc. All works and knitting diagrams are developed with easy to understand illustrations. 

Crochet natural summer hat knitted with eco-andariya | エコアンダリヤで編む かぎ針編み ナチュラル色の夏の帽子
64 pages. Published in 2024. In Japanese.