Across listings, heights range from about 2 in up to 8 in, widths from about 7.08 in to 10 in, and depths from about 2.25 in up to 10 in.
Several listings note a two-year coverage (often listed as a "2 Year Limited Warranty") and include manufacturer or supplier contact information for warranty or support questions.
Yes — many designs emphasize kid-friendly use: easy-open latches or simple clips for small hands, compact shapes that fit into backpacks, and compartment layouts or dividers that reviewers say make packing straightforward.
Some hard bento boxes include built-in or removable freezer/ice packs plus airtight, leakproof lids or seals to reduce spills. Insulated soft lunch bags rely on thermal linings to help retain temperature.
Hard bento boxes commonly use latch closures or easy-close fasteners; soft lunch bags mostly use zippers. Carrying options include handles, and some bags also list clips or straps for portability.