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Double-wall insulation really does the job—my protein shake stayed frosty through a two-hour gym session. The 24oz size is perfect for tossing in a bag, and the black finish hasn’t shown a single scratch yet.

The 18/8 stainless steel body feels solid without being heavy, and the 24oz size fits perfectly in my car cup holder. I've been using it for my morning protein shakes and the double-wall insulation keeps everything cold through my whole workout.

The double-wall insulation actually keeps my protein shakes cold through a whole afternoon at the office, which is way better than my old plastic shaker. The stainless steel feels solid and the 24oz size is perfect for one big serving without taking up too much room in my bag.