This study aims to investigate the depiction of product culture in English textbooks for senior high school students in Indonesia, focusing on the "Bahasa Inggris: English for Change" textbook for grade 11 students under the recently implemented Merdeka curriculum. The research questions centered on the types of product-related cultural themes explored in the textbooks and how these aspects of the product are derived. Methodologically, Moran's checklist and Cortazzi and Jin's cultural categorization were used to identify and categorize cultural dimensions. This research methodology integrates qualitative data analysis, specifically content analysis, with quantitative elements, including numerical data and percentages derived from tables, to ensure a comprehensive exploration of cultural representations. The findings showed a significant emphasis on depictions of Places (52.8%), followed by Artifacts (22.6%), Institutions (13.2%), and Art Forms (11.3%), indicating an imbalance in cultural representation. In addition, most of the cultural content is from the source culture (Indonesia), with lesser representation from intercultural and international contexts. In conclusion, although the "Bahasa Inggris: English for Change" textbook provides a foundation for cultural learning, there are opportunities to improve the balance and inclusiveness of cultural representations. Recommendations are offered to educators, English content developers, and future researchers to enhance students' cultural understanding, diversify educational materials, and contribute to the improvement of cultural representation in English language education.
