The "Nalgene 'Everyday N gene' - 0,75 L" is very stable and high quality finish. However, for me it could be a bit more ergonomic shaped, as now is the case even with cheap disposable plastic bottles. Maybe was handed over to the measuring scale on an ergonomic indentation. The bottle is slightly bulbous and thus somewhat difficult to include for petite woman hands. She slips on screwing slightly out of hand, especially when man was sweating a little example in sports. Therefore, a point deduction.
Otherwise, the bottle and the screw cap is very stable and leak-proof, even with carbonated drinks as long as you do not do the full bottle until it stops.
