Description SmartShake Reforce Stainless Steel Ravenclaw Shaker (Harry Potter) SmartShake Reforce Stainless Steel Ravenclaw Shaker (Harry Potter) – Wit beyond measure is man’s greatest treasure! If you’ve always felt like a Ravenclaw, represent your house with this officially licensed stainless steel Shaker. Battle-tested More than 25 million happy customers since 2009. Durable design Keep using it for a decade or more. Leak-proof 100% guaranteed by our Smartshake™ Warranty. Comfortable & lightweight Weighs only 170 grams / 0.375 lbs. Engraved measurement Units of measure engraved on the inside of the bottle Practical & easy to clean Wide opening for simple cleaning (handwash only). This is a single wall steel bottle. Do not use with hot liquids. Also check out other Special Offers here. Additionally find out more about Smart Shake here.