The 25oz size is perfect for my morning protein shake, and the stainless steel keeps it cold till I finish it at my desk. Dropping in the whisk ball gives me smooth, clump-free shakes every time.
Abigail O.★★★★★
Took this to the gym in my bag and the 25oz size fits a full scoop with room to spare. The whisk ball actually rattles around and breaks up the powder clean, no clumps at the bottom. Stainless steel keeps it cold too.
Adam★★★★☆
The whisk ball actually does its job, no clumps left even with thick protein powder. Only thing is the lid takes a firm twist to seat right, but once it's on it doesn't leak.