Since we live in a city and therefore the dog / dogs can not run really free, was the question of what line we take.
First we had a simple 2.5m leash, but of course is too short for an inquisitive young dog.
Therefore we bought a towline with 10 meters that had worked very well until the first time for a walk and rain have collapsed.
Therefore, Flex line was needed, but which?
After much research on the internet we chose for flexi and equal taken the longest here, which there was.
With this, we have been running for almost 2 years, three times a day for a walk without getting tired.
Also strong jerk holding the leash without a muchs.
We also have the leash already tried in the water, not knowing whether she can stand it or not.
She did, she was several times and for long periods of time underwater and runs without an intervention of us still like the first day.
This line I can recommend in good conscience.
Although it is not the most favorable, but if you have a dog over 10KG, you should not skimp on crockery or linen, as this may turn out badly.
Strong buy recommendation!
