If I look at my bottle caps here in Germany, my 0.7l "soda" water bottles, don't have gaps. The Coca Cola glass 0.5l bottles don't have gaps either. Club Mate

If I look at my bottle caps here in Germany, my 0.7l "soda" water bottles, don't have gaps. The Coca Cola glass 0.5l bottles don't have gaps either. Club Mate 0.5l doesn't have gaps. Only the Sprite bottle 1l has gaps. Handlingwise I don't notice any difference. Maybe because it's a learned technique thing, you twist it, let gas evaporate then open it. I don't even think about it.