So far so good my wife and I use them daily and they do a great job without clumping protein
Great product idk if it’s just my protein powder but it leaves little chunks but it did that in my other shakers other than that though I’d say this is well worth the money
I bought 2 Signature Shakers and one leaked. I reached out to customer service via email and they responded quickly, gave me a choice of replacement and had it shipped out same day. Unheard of service in this day and age.
FINALLY! A bottle that mixes all the powder and liquid I put in it and it’s easier to clean. It’s always easy to take along!