It is very handy, silicone is fine enough to keep good flexibility when training and thick enough to be resistant when you press, and time.
The capacity is medium / large which is sufficient for common manipulations. And who can do more can do less.
The 2 sockets provided are of good quality too, holds well in the pocket itself and not out through the tip (it was one of my fears that the pocket was seen in silicone, but no problems at this level)
View may be to buy a complementary socket kit (the same brand) according to the sets that you want.
The cleaning step is very simple, no particular adhesion. Dries very quickly.
I recommend this bag.