I do hope you mean transport bags, because if you mean those revolting hand-bags with the betta "enclosure" built in to them, I would implore you to please reconsider. Carrying about a betta in a hand bag is not only immensely stressful to the fish, but will result in being jarred about, exposed to temperature changes, and potentially injured if you are bumped in to. No responsible fishkeeper supports such bags; in fact, most fish keepers would not readily transport a fish ANYWHERE unless there was a need for it. Keeping a living animal like a fashion accessory is cruel and morally reprehensible.