I bought it for my German Shepherd, very powerful, 10 months old / 32 kg weight. The leash is very good, durable, effective for walking him to release energy. I recommend it.

It is very sturdy and shows that it will be durable. It has not made any noise during pulls (dog weight 30 kg). The previous Flexi had lasted me about 22 years (and managed to break it by the aforementioned 30 kg troublemaker).