

This reminds me of soda/beer can designs. You know the hole in the ring tab? I used to believe it was there only for it to provide better grip for your finger when opening it. Turned out it was also there so you can fit a straw and have a way of stabilizing it.
Most people had no idea about that.
Yeah I remember those. Where I grew up that style of ring pull was the dominant style.
One reason why that style was retired in many places was to reduce waste. When you had a ring pull tab that peeled off, most people threw that away separately. I remember seeing those tabs being thrown all over the place.