Microbox (500mL) x 20

Sleeve of 20 Microboxes (500mL). These microboxes have a thicker collar and are slightly more rigid than the older ones. They become soft when heated in a pressure cooker - so do not stack on top of each other or they will buckle. The cap should also be left loosely on and closed fully while cooling (otherwise the pressure can deform them). Other than that, they are great!