You can inflate the head of this soft, pliable, latex Expandable Butt Plug through the pliable rubber tubing. There is a soft rubber pressure bulb for quick inflation and an easy to use push button purge valve. Just inflate the head to your desired size. There is even personal lubricant included for your convenience. Expand your anal most pleasures! Insertable length 4.00 inches, width 1.50 inches.