Apart from the fact that he has just to do the "sting" ... this fountain pen has been entirely satisfactory: he quickly corrected poor positioning of her fingers and her spelling is improved if found. I questioned him on comfort: at first it made him "weird", but quickly, he placed his fingers "without realizing it." The question is whether it is now naturally positions his fingers without the help of the form of the pen, with a conventional cylindrical instrument.
The really good idea would be to offer this instrument from the learning of writing, and not, as we have done in remediation.
The useful detail (but does not prevent disappearances): a small label to include the name of the child placed within the body of the pen (it does not come off with moisture fingers) and visible by transparency.
Small least (but not so bad): the range of colors offered is very extensive.
Product strength could not be evaluated, pusqu'utilisé bit long, hence the median estimate.