LifeStraw Go Series Tumbler 24 oz

I've been using this tumbler for my daily commute, and the membrane microfilter actually removes the weird taste from office tap water. It's slim enough to fit in my car's cup holder, which was a pleasant surprise.

Took this on a camping trip and filled it from a stream—ice stayed cold all day and the slim design actually fits my car cup holder. The membrane microfilter gave me peace of mind knowing I wasn’t drinking any bacteria or microplastics from the tap.

This thing filters out even the microplastics and cloudiness from tap water, which is exactly why I bought it. The slim design fits perfectly in my car cup holder, and the 24 oz size keeps me hydrated all day without constant refills.