Caffeine infused underwear.. Let that soak in for a moment or not . Why in the hell would you want caffeine in your underwear? Worse yet its being marketed as a weight loss product!
The Federal Trade Commission said Wacoal America and Norm Thompson Outfitters, which owns Sahalie and others, were accused of deceptive advertising that claimed their caffeine-impregnated clothing would cause the wearer to lose weight and have less cellulite.
The bullshit factor is in the millions range at that point because if I counted all the Caffeine in my system at any given point i’d be about 2 pounds. 
Of all the weird places to put caffeine , I think it would be underwear or ass. Who ever thought of that must of been bored beyond sanity .