So on seeing this my smart ass husband was like, Yeh I know to use this, I don't need instructions.... Oh my god he nearly tore my pussy off! This pump is so strong! Its pretty easy to use (if you're not my husband) the only thing I didn't like was that the rubber sealing kept coming off so if you're someone who like feel like someone's trying to remove your flaps then this wouldn't work for you as the seal breaks.