The Roboblow by Zolo is the ultimate sucking masturbator.  It is 11 inches long and 4.5 inches wide.  This masturbator has 10 unique functions, adjustable suction levels, warming sensation, 2 interchangeable sleeves, drying function, erotic audio, and an 8 foot cord.

This ultimate masturbation sleeve has an ABS plastic case with TPE sleeve.  Its sleeve can take the full shaft compared to others.  Both sleeves have textured inner lining with ribs and pleasurable shapes. 

Roboblow's control buttons consists of a power button, increase/decreasing vibration and suction button, erotic audio button, heating button, Bluetooth button, and pattern changing button.