Is actually already clear

YES, the thumb strap is a little too tight.
YES, the weights are a little bulky and therefore do not sit perfectly.

But since you have to stop not even be so'n whiner, then has this been going.
I had huge fun to any event with the weights.

Large weak point here: the seams separating the two chambers. Even after the first session they were cracked in several places. Since the ankle cuffs were similar lediert, I have all of them brought to the shoemaker and can follow all Nähgte again.
Second session with the same result (and completely destroyed ankle cuffs). Well, at least I can complain directly to the shoemaker and the things do not have to complain about the Amazon now.
Unfortunately, I can not judge the importance of the separation seams, but it will have nen reason that are there.

Either way, you can use the parts in any case. Kung Fu is certainly more of an extreme case ...