Using this lunch box is easy. You can either carry it by the top handle for a quick trip or use the long, adjustable and detachable shoulder strap for hands-free carrying. When packing, stack your food containers neatly inside or place your cans and water bottles. For keeping your food and drinks cool, we recommend using ice packs. The foam insulation layer will help maintain the temperature. Don't overload it as it can hold up to 10 lbs. There's an exterior slip pocket on the front where you can keep small items like utensils or a napkin. After use, spot clean the lunch box with or without soap. Then air dry it or use a towel to dry it. This lunch box is made of INSULATED POLY TWILL, so follow these cleaning steps to keep it in good condition.