I use these before gym and during Hill walking and I find them easy to digest and they give you excellent on the move nutrition...lack of fat and good ingredients with a high protein content make these a very good buy.
The handle the body and the filter all good and well thought out, the filling point with the hinged lid is great too. Shame that the complete unit is too tall to fit under most taps without the lid being removed. Biggest critique is the whole lid comes off unless you take care to place thumb over the rear of the lid to stop it coming of when you pour. Well made but flawed in my opinion.