Unique design for maximum effect. This masturbator has a superior functionality to give you powerful erections like never before. To use it you will simply have to place the penis in the transparent tube and press the air lever to check how the air level increases and your erection is more powerful. You can see the increase thanks to the graduated tube. TPR + PC + ABS Measures: 29 cm x 7 cm 5.5 cm x 5.5 cm