I bought this ramekins for a child's birthday, because they should stick less than paper case. The forms arrived, beautiful space-saving stacked into each other and in three beautiful colors. It smells nothing spurious, everything absolutely odorless and tasteless. The forms are up about 7 cm wide and 3 cm high, so perfect muffin size. Since the forms are slightly smaller than the openings in my muffin tin, I can instead fill 15 forms with the dough of normal 12 muffins. Fat or other not you need at this Muffin helpers, just up and batter into it. It is best to fill to 1/3 then not swell over the dough and muffins look really perfect. I initially had concerns because the side walls appear very thin, but these little helpers baking hold their shape. Children's small hands will find the colors and feel great and can solve the muffin easier than out of paper cases (where you have to take care, that the kids eat with no paper) Cleaning is insanely easy, either rinse by hand once or just once in the dishwasher - perfectly clean. After that they can be stacked into each other again and put back into the package, so they just take the place of a water glass in the cabinet. My Conclusion: Dear silicone as paper and these forms are perfect in color and handling. 5 Stars