This is The Cool Baby, a 32-oz insulated flask hidden inside the body of a baby doll in a baby frontpack. It's currently a far-from-funded Kickstarter project that looks like it's not going to make it. I can't say I'm surprised, the fact the baby is so obviously fake ruins the illusion. What they should have done is made it a baby SLING, with a baby doll face tucked way down in there so it appears it might actually be a REAL baby. Plus then you could probably push the volume of the flask up to around a gallon. Now that's some serious drinking. Of course people are probably going to say something when they see you stumbling around drunk with what appears to be a baby strapped to your chest, but that's when you can show them it's just a flask, because it's already served its purpose. MISSION ACCOMPLISHED, somebody bring me home I need pizza.
Keep going for the entirely WTF was that Kickstarter video.
Thanks to lilco, who agrees the best flasks aren't flasks at all, they're regular shot glasses because you're drinking at a place where you don't have to hide it.