I've only had my bottle for a week and I really really like it! It washes well, and its actually really nice to drink out of. I find that the size of the opening is just perfect - no water spilling out the sides and my nose doesn't get all caught up in it! Also, when I refrigerate my water in it, the glass/silicone combo keep it cool for a while. Another great product sold at Sweet Peach, I can always depend on them to provide the best!