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it is a good size, thats it. its very hard to get the vacuum started, if you push your pump connection all the way in it does not seal. and if you back it out alittle it starts to seal but then you have trouble to get it to release to take it off. then you loose the air you had in it and have to start all over again. after about 4 tries you might get one to stay on. then you have to start all over again with the other side.
Verified purchase: Yes | Condition: New
These are the best cups in the market! They are great to use a long time.
Verified purchase: Yes | Condition: New