Can I use my Jumbo Silicone Cups for baking? Yes, you sure can! Our Jumbo Silicone Cups can handle hot temperatures up to 220°C and cold to -40°C, making them ideal for use in the oven, air fryer, freezer and more. Vanessa Martell-Mead What sorts of things can I use the Jumbo Silicone Cups for? How do I wash my Pegs?