I was surprised how convenient this product is. Mixes up any drink you would like, from smoothies to frothing up milk for your coffee to heavy whipping cream. I use it every day to mix my electrolyte power with water. It does a beautiful job. The large is a bit heavy for me, but I don’t use it on the go, so it isn’t an issue. If I did, I would purchase the small. This is made with very tough Borosilicate glass, looks great and is easy to clean.