100% food grade silicone, BPA Free. Heat resistant -40°C to 250°C. Small size(approx): Opening Diameter 1.6inch, Bottom Diameter 0.3 inch, Height 2.6 inch. Reusable use, small volume funnel allows you to carry it with you and easy to store anywhere. Easy to clean, dishwasher safe, or just simply wash with soapy water. Please NOTE to dry them immediately after washing. The mini funnel can be used to transfer liquids and powder.