also: エコバック · エコ・バッグ · エコ・バック
eco bag; reusable shopping bag
A reusable bag, typically made of cloth or sturdy plastic, carried to reduce single-use plastic bag consumption.
I always take an eco bag when I go shopping.
Since plastic shopping bags became chargeable, more people have started using reusable bags.
Common variant with irregular kana usage; often seen in informal writing.
Hyphenated form, sometimes used for clarity or in product names.
Hyphenated variant with irregular kana; rarely encountered.
Wasei-eigo (Japanese-made English) combining 'eco' (ecological) and 'bag'. The irregular variant エコバック likely arose from the similar pronunciation of 'bag' and 'back' in Japanese.