That freaky hand movement used most of the time, looks like something that might happen, if you had an epileptic fit whilst masturbating
Worlds first flexible dumbell and hopefully the last. It looks about as ridiculous as shakeweight.
Sometimes people reveal answers to questions in life, few feel the need to ask and don't want an answer to. I think this is one of those times.
Sorry, but to me it just looks like a gimmick and that's me being honest