This sweating belt is quite effective, even for those who are not great athletes like me. After 1h30 walk, the effect is clearly visible on the belt and on the skin. So nothing to say from this point of view. By cons, nothing is indicated in French on the box. Certainly, the use is not complicated, but it would have been safer if the usual precautions, such as failure to wear a seat belt more than 2 hours continuously, or check not being allergic to neoprene, is also translated into French. Lack to mention absolutely.
