The Power Boss is an automatic penis pump with more suction than ever before Easy-to-use, simply press the on button and experience instant growth inside the cylinder. You will be able to measure you increasing length with the ruler on the side. Use with or without the removable sleeve, designed for comfort and pleasure. Just apply a little lube to create a seal and you will be good to grow A quick release button allows you to break free of the ultra-pleasurable suction when you are happy with your gains. Measurements: 10 inches in overall length, cylinder is 6.75 inches, 2.5 inches inner diameter Material: TPR, ABS Color: Clear Note: Requires 2 AAA batteries, not included