Made from food grade silicone, our Pot Tops are air tight, leak proof and designed to fit standard sized pots including 150ml, 200ml, 200g, 300ml, 450g, 400g, 500g and 600ml. Dishwasher and fridge safe. BPA free. The last thing we want is for you to receive your MOOPOPS only to find out that they don't fit. If the brand you prefer isn't shown in the image above please use our guide and measure your pots. Each pack of Pot Tops contains one small lid and one big. The smaller will fit pots with a diameter of 86mm. The larger top will fit pots with a diameter of 95mm. Using a ruler, measure the outside edge to outside edge at the centre or widest point of the pot. While our tops do fit 95% of the brands available we can't promise that they will fit all, so please check to save any disappointment.