Most mermaid purses use zipper closures. Some larger tote-style versions are open-top with no closure. The category covers both zip-closure and open-top designs, so check the product listing if you need a secure closure.
Interior configurations vary: some mermaid purses have no compartments, others include a slip pocket or a single interior drop pocket, and some include zippered pockets. Check the product details to confirm the exact layout.
Styles range from small pouches with no handles to larger bags with double shoulder handles. You’ll also see adjustable shoulder straps on crossbody styles, detachable straps, chain-plus-faux-leather shoulder straps, and other adjustable handles depending on the design.
Small mermaid pouches commonly measure about 8.25" wide by 5.15" high, with depths ranging from around 1" up to about 2.5". That size typically holds a phone and a few small essentials.