economy pack      
noun [ C ] uk/ɪˈkɒn.ə.mi ˌpæk/ us/ɪˈkɑː.nə.mi ˌpæk/
 (大包装、价格低的)经济装
a larger amount of goods that you buy for a lower price
 - More examples
 - It could be cold and wet so pack some sensible clothes.