For the money, they are good. I think you need to be careful not to drop them from a height. Plastic filled with sand. Bigger than the metal ones but they don't bother me.

I was inexperienced, I bought the item for the first time. They are bulky, obviously the weight is achieved with cheap material of low specific gravity. They do the job I wanted, but if I bought again it would probably be something more expensive, but of smaller volume. Anyone concerned about space should consider this from the start.

Generally it's good, but on the side where the dumbbell has a cap, there is a sand leak, they have filled it with fine sand and it seems to be leaking. I put insulating tape around the edge of the cap and since then the leak stopped. This issue can be dealt with, and quite easily at that.

Nice handle, very bulky (which is bad in terms of space), sturdy but I don't promise anything if they fall (generally, don't throw them on the floor), their interior consists of a fine-grained material (like sand but finer) that falls from the cap as they move. They also make noise when they move.
For anyone who wants to do their job, it's fine, but let's not forget that we bought a plastic weight for 15 euros, so let's not expect everything to be perfect.

The cheapest dumbbells in this weight range. Plastic exterior, but they do their job just fine! Much bulkier than they appear in the photo

They do their job just fine, but you can hear the sand when you use them, which is located inside - at least in my case. Other than that, there is no reason to get something more expensive, they work just fine.

Economical indeed, but "jingle bells" from day one. Every repetition and musical background is like a maraca.

For their price, if you get them for 17 euros and not more, they do their job... However, as you can see in the description, it says "plastic coating." What does that mean? It means that you shouldn't expect something sturdy like a quality dumbbell. It has a plastic coating and is filled with gravel, not something metallic inside to hold the weight. As a result, for it to be 5 kilograms, as you can understand, it is much larger than it appears in the photo. It's not what I expected, to be honest, and I thought it would be much smaller. However, if the above doesn't bother you, go ahead and get them.

Very good overall, excellent for their price. Quite sturdy, without any noises from "pebbles" (however, I take care of them and so far they have never fallen down)

After 4 months it started to break, the plastic opened and the beads were coming out from inside. After some repairs, it was okay but a very mediocre product for its price. But if you want it to last, I do not recommend it

Very good dumbbells, they do their job as they should. They are a little bigger than I expected, but that's not a problem.

I bought them and instead of black, they were light gray... Their construction is mediocre and when you use them, you can hear some of the materials inside moving from one side to the other. After a considerable amount of time using them, I can say that they are definitely worth it. They have fallen down on me more than 3 times and they haven't suffered any damage at all.