scubastingray
Contributor
You loop it around a d-ring with the round end and then squeeze the mouthpiece through the square end.How do those ones in the picture work?
I've never seen those since I either use a long hose/bungeed second or just a single second stage if I'm solo.
I also seldom go into the dive shop, only for air most of the time so I'm kind of out of the loop.
Honestly a snorkel keeper will probably work as well and is cheaper.