Could be better, could be worse.
We got these to try out for some fun in the bedroom. They do what they say they do, but it is more of a longer term investment (i.e. using it multiple times before noticing significant results). That said, it might just be us but the suction doesn't always hold. Not our worst purchase, but not our favourite either.
Easy to use and to adjust to the pressure you want.
Can be a little hard to squeeze at first
Great booster kit, twice a week O.D. I dare.