Review on 💧 Contigo Autoseal Chill Stainless Steel Water Bottles 24 Oz SS/Monaco & Monaco - 2 Pack: Stay Hydrated On-The-Go! by Dexter Pullen

I gave 4 stars to be clear about what I am. It does almost everything I expected. However, there is a surprise factor that no one seems to be paying attention to. The mouthpiece you drink from is difficult to clean, I just poured water (cold) into this bottle. Because the soft plastic that creates the auto-seal effect is always behind a hard-shell cover, if you're careful when you press the button to drink, you'll discolor so badly that it looks like mold to me. I've tried so hard to clear it up. For reference, I've had it for almost 6 months now. I noticed this about a month ago. I've added an upside down photo so you can better see what I'm talking about.