Review (5/5): Get a bottle cleaner brush. just sticking them in the dishwasher might not be enough.
This was a gift for my best friend and gym partner. I personally own two. They're cute and they're sturdy! Not to mention environmentally friendly and easy to clean. They may seem expensive at first, but unlike other plastic bottles, I'm still using the first one I've ever purchased from 2.5 years ago. I've tried other cheaper glass bottles and have shattered a few before I buckled and bought a BKR bottle. I use it 4 time a week and I'm a pretty clumsy person. The design is simple and sleek. I personally prefer the classic non-spiky covers as they're bit more timeless.