Boring lunch at school again rock it out with the mustard guitar amplifier bento box which features a lid resembling a classic looking rock amp making your dull meals much more interesting and fun also if you take pride in your lunches thats fine as well since the bento box is bpa free for health and safe environment reasons and it offers a watertight seal to ensure your meal wont mess up the backpack or briefcase during transport the lunch box offers a capacity of 1410ml 45fl oz