I tend to try and avoid plastics when I can with most things, but especially with things that come in contact with what I consume. Not to mention, plastic, even for a reusable water bottle, is just not sustainable or socially responsible. Ive had a smaller glass bottle but really wanted something large, which the market seemed to be lacking until I found bkr! I am completely obsessed with this water bottle. Its sleek and stylish, but still sturdy. I've dropped it a few times on concrete and the silicone does a great job to protect it. It does pick up dirt pretty easily, but its nothing a little soapy water can't fix. I got it in 'sigh' and its gorgeous. The best part however, is the size. While it can get a little heavy when full, toting that much water around encourages me to actually drink it and stay much more hydrated than I had been before. Though you could put other liquids in there, I would only recommend water, since the small neck makes it harder to thoroughly clean. Love, love, love my bkr!