My son and I participated in a large community ride out of Lincoln NE this summer. part of our registration was two Voda water bottles. At 6 years old this 15 mile ride was his first experience riding at an event. He has loved the water bottles and was taking one to school each day to drink from. The problem is that he has bit through the rubber tops. I looked on Trek online and Amazon and haven't found a way to just replace the top rubber/silicone without buying a whole new water bottle. Anyone have any ideas or links to new tops for these bottles?

water bottle

broken bottle tops. red lid is fine. Just need the black bite pieces.