After interviewing 4 people, I have found 3 main problems in which a person may encounter when using this beverage key.
"I like how the bottle opener can fit inside of my pocket and is very small, but there is no leverage when I'm trying to open this bottle."
Tester 2 & 3:
I do not like the material. It is too slick and hard to get a good grip.
Tester 4: