Reforce Stainless Steel - SpongeBob Bring Bikini Bottom to Your Workout. Featuring fun and colorful SpongeBob graphics, this shaker adds a splash of joy to your fitness routine. Battle-testedMore than 25 million happy customers since 2009. Durable designKeep using it for a decade or more. Leak-proof100% guaranteed by our Smartshake Warranty. Comfortable & lightweightWeighs only 170 grams / 0.375 lbs. Engraved measurementUnits of measure engraved on the inside of the bottle Practical & easy to cleanWide opening for simple cleaning (handwash only). This is a single wall steel bottle. Do not use with hot liquids.

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