I don't know but I just bought one of those inserts off of Amazon that allows it to hold a 40 oz Hydroflask that works great. I'll try swinging by a Circle K and testing it out. Give the thread a bump if you don't hear back from me.
But I can't recommend the Hydroflask enough. Sure, you lose 4 oz. in volume but the ice lasts all day and night. You probably could get away with less ice and more soda with the Hydroflask and still keep it cold and bubbly all day. I found some bendy straws on Amazon that fit the hydroflask flip top and they have a cap on the straw so it keeps the gas from escaping. My sodas are still fizzy the next day. But I'm not picky, I'll drink the Sam's Cola at Walmart. Your mileage may vary! 😁
But I can't recommend the Hydroflask enough. Sure, you lose 4 oz. in volume but the ice lasts all day and night. You probably could get away with less ice and more soda with the Hydroflask and still keep it cold and bubbly all day. I found some bendy straws on Amazon that fit the hydroflask flip top and they have a cap on the straw so it keeps the gas from escaping. My sodas are still fizzy the next day. But I'm not picky, I'll drink the Sam's Cola at Walmart. Your mileage may vary! 😁