You've meant the Sona Slim belt?
If this is the one, I did and it is quite effective only when you practice it regularly.
Do not remember the brand.

I fell Eating less early breakfast in the morning is the key.
Eating less starchy food and skip the 10AM and 3PM breakfast is more effective.

Tea break is the word (it is usually served at 10am and 3pm). It means dont rely solely on the belt cut down unecesary meals.

Yes I believe belt works.

Any brand will do. Their job is hold the tummy in. If you keep adding weight to the tummy then it will losen and become ineffective. It will help only if you keep a weight lossing diet. I say again dont rely on the belt diet is important to. The next factor is exercise.

any other brand as well beside sona ?

My God, just change your diet, lazyass.

I dont see how tying a cloth around your body can have side effects. If there is any effect it will be immediate effect. You tie it too tight and you will faint. Or your skin is sensitive to the material resulting in rashes. After delivering babies, ladies tie themself up real tight with fabrics for up to 3 months. I never heard them talk about side effects.

Wow, I am surprise that being wrapped by super tight fabric can damage the uterus. That being the case, do you think wearing a bra can cause breast cancer. There is even underwires in a bra. We never seem to have breast cancer until the bra was invented.

Okay, we are talking about different things. I did not know there are products that vibrates or heats up these days. I can also accept what you have read may be true where these products are concern. It seem to make sense since there is constant heat or vibration at the uterus area. I will be more cautious on these types.

Just simple fabric with valcro to fasten. You can adjust how tight you want it to be. There are also other undergarment suit type. You can call them lingerie but not made of lace and satin.

it doesnt make u lose weight, but it does tone your ab muscles up. You gotta have washboard abs to make full use of it.

When you wear this slim belt over the part that you want to burn fat, after wearing with the "right" temperature for about 30 minutes, you body will be sweating. It is actually applying heat to your "fatty area" to make your sweating.

For example, if you're a thin person and you apply it to your stomach area, after using say for about 1 week,
you'll seen less fat and even some muscles (if you've pervisouly have it?). Try measure it with the measuring tape before and after result.

How much can you be sweating every day unless you are the very active person who sweat a lot.

The other more effective way is to skip 10AM, 3PM & Night supper/breakfast.
This mean less food/rice is been kept in your body.

When the body is hungry, it will convert the existing fat in your body in to "food". Well, that is when your body fat is being use.

For me, if I skip breakfast for 1 week, I will lost about 2kg. Anyway, I am kind of a thin type of person and also health consious.

If I am taking my Bamboo Salt supplement, then I even loose more weight.
I took this Bamboo Salt because I've seen people recover from certain disease when they use this regularly.
Better be safe then sorry later.