Excellent for making stylishly shaped custards, panna cotta dessert, curd and fruit jelly and similar. Made of excellent resistant plastic. Refrigerator and dishwasher safe. Recipes are enclosed. BPA Free They are made of resistant plastic, crush-proof, suitable for fridge and dishwasher. They come in sets of four. The moulds are made of three parts: body, small upper cap and big lower cap. Close the small cap, turn upside down and fill the mould to the line; close the big cap and put in the fridge (keeping upside down). Once ready, extract from the fridge, remove the big cap and lay the mould upright on a dish: once you remove the small cap, the custard will come out of the mould and lay on the dish without leaving any leftovers.