A penis pump - a device that uses suction to increase blood flow to the penis, resulting in a firmer and larger erection. These pumps can be manual or electric and are typically made of plastic or silicone. Some pumps also feature additional features like vibration or texture to enhance stimulation. Penis pumps are often used to help with erectile dysfunction or to increase the size of the penis temporarily. However, they can also be used for solo play or with a partner to enhance sexual experiences.