Only used once and have extra straw lid that I purchased separately that I'll include in this purchase PACKED WITH FEATURES: from it's MagFlip lid and removable agitator that doubles as an infuser, to its easy carry handle and non-slip base, the attention to detail and design makes this the most unique (and best looking) shaker in existence. REMOVABLE AGITATOR & ROUNDED INTERIOR: Toss that annoying metal ball that comes with most shakers - The MultiShaker has a patent-pending, built-in blending system and rounded bottom to perfectly mix your favorite powders without sticking or clumping. 26oz CAPACITY: The MultiShaker has a capacity of 26oz with the agitator installed, and has interior measurements marked up to 18oz on the stainless steel. BEVGUARD INSULATION: Includes our BevGuard Technology to keep all your favorite beverages ice-cold until the last drop. MAGFLIP LID: Our patent-pending leak proof MagFlip lid springs open and stays there using powerful neodymium magnets. It is 100% leakproof for cold beverages. The MultiShaker should not be used with hot or carbonated beverages unless using it with our MÜV lids (sold separately). EASY TO CLEAN: The MultiShaker includes a rounded interior and removeable agitator, so it's easy to clean and most of our finishes are dishwasher safe.