useless for me [SEP] suction the one thing in life that everyone looks forward sucking these provided no such thing maybe i was using them incorrectly you can use them two ways one way gives you wider more oval shape if you turn around them around you ll get a less wide but taller shape unfortunately both ways did not suck my guess is that they re too soft and too short so it s too easy and doesn t offer much resistancethat being said everyone s lips are different so it s certainly possible that these could work for other people who maybe have smaller lips but for me they were useless