Sizes vary by model. Common categories are: compact (examples: about 3" x 11" x 8"), standard/medium (examples: roughly 8.6" x 6.3" x 10.6" or 10.43" x 5.91" x 11.81"), and larger tote-style options (example: about 17" x 12" x 6.5"). Check the product listing for the exact dimensions of the model you’re considering.
Listings most often show polyester exteriors; other fabrics include Oxford cloth and corduroy. Some models use vinyl panels on the outside. Interior and insulation materials include thick pearl cotton and an aluminum foil lining to help retain temperature.
Typical carrying features include padded or reinforced top handles (some with about a 7" drop for hand carrying), lightweight construction, and in some models shoulder straps or grab handles. Check the product page for exact handle style and strap options.
Most models use zipper closures. Many also include additional storage like zippered front pockets and elastic side pockets for small items or bottles.
The range includes both kids’ and adults’ styles. Some listings are sized and labeled for young children (examples list ages 3+ or 6+), while other models are sized for adults and everyday use—check sizing and age recommendations on each product page.