MADE OF THICKER NEOPRENE THAN OTHER BRANDS - If a wetsuit keeps a surfer's body temperature stable, just think how the same material will insulate your lunch. Our thick neoprene stands upright better, insulates longer, and STRETCHES TO FIT all your lunch containers [dimensions are 30x28x16 (cm)] REUSABLE AND ECO-FRIENDLY - Helps you do your part in protecting the environment by not throwing away paper and plastic bags, 160g/pack INSULATES UP TO FOUR HOURS - Keeps your food fresh longer than normal lunch boxes built from plastic NON-TOXIC, STAIN RESISTANT, AND MACHINE-WASHABLE - Made up of lead and pvc-free materials to keep your family's food safe from nasty elements found in cheaper plastic lunch boxes for kids or adults. Stain resistant and machine-washable so there's no need to worry about spills 100% SATISFACTION GUARANTEED: ZMvise guarantees that you will love our product. We strive to make only products-at the most affordable prices for you. If you are not satisfied with this, you can contact us to have a return or refund directly. Reminder, after we receiving your order, will start picking within 3 days, and we correct the transport time is about 7-10 days.