Thick and rubbery, Jackt is heavy with inner nubs and ridges to stroke your Huj, no vent-hole for max suction... gripper finger ring outer ribs equal non-slip grip. JACKT stroker is made of blubbery rubbery-soft stretch Plus+SILICONE mix designed for a sloppy jo feelthis thing has hj nubby things and ribs and it gets narrower and wider inside, so many new feels for your knob. 

Finger ring 
Material: silicone 
Inner nubs 
Ridges and grip 
No-slip 
Big. Rubbery. Thick walls for extra meaty JO 
Inner nubs all around the opening, ripply humps further in 
Finger hole rubbery loop for no-slip grip 
Rubbery fat outer rim in case you pound hard 

MEASUREMENTS: 
Length: 6 inch (15 cm) 
Width: 2.5 inch (6.35 cm) 
Circumference: 8 inch (20 cm)