Shark tank flop, don't buy the sleep styler mini!

I was excited when I saw the sleep styler on shark tank. As a mom of four kids i rarely find the time to curl my hair as I would like to. This promised to be an overnight comfortable curler system that would help me style while I slept and avoid damaging my hair by applying direct heat on it. I purchased the mini as my hair is shoulder length and that was the recommendation. What a flop! It took forever to try and get the rollers in so they would stay. Even after watching multiple video tutorials. Yes, they were comfortable to sleep in but that was the only good thing. My hair is fine and holds curl well and after a night my hair was poker straight as soon as I took these out. A huge waste of time and money.