my friend had a pair of these. he bought them and didn't know. i told him about the bottle opener and he was like oh, that's cool. a week later the bottoms of the sandals were so filth you would not want to open a beer with them. dog **** and chew gum= no bottle top where i put my mouth. and he won a beer dispenser for his apartment a few weeks later. no need for a bottle opener when you have a machine full of cans in your living room.