very hygienic and cleans very well
The brush is silicone which I find awesome because sponges will trap moisture, get moldy, or lose shape over time. While the ones made with plastic bristles scratch the glass.<br /><br />But silicone is perfect, and it works well with my glass bottle which is 32 oz (about 1 liter). There is still room left for your hand to maneuver the brush. I would not have been able to clean my bottle without this brush!
Rating: 5 stars