ポータブル防水オックスフォード断熱ランチボックス袋クーラーピクニックバッグ旅行用品
Have on occasion used it as a roomy handbag when in a hurry. Fits a lot more than you'd expect whilst still looking small, due to the wide construction. Colours on the photo are pretty accurate too, for the orange one at least.
Big enough to fit lots of stuff. Well built. Should last. Water repellent too.