Unleash your inner rock legend with the Fade to Black Shaker, inspired by Metallica’s iconic ballad. Its sleek design features haunting imagery and the song’s deep, introspective vibe—perfect for fueling your workouts or rocking out on the go. 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.