From Vamp Silicone:

Our second largest dildo, Joplin is not for the faint of heart. Perfect for those who believe that size does matter, the Joplin is as big as and bold of the voice of its fierce namesake. Measuring 8 X 3, it has the girth of the Carina but a few inches shorter. If you enjoy a good old fashioned vaginal or anal fisting then you will fall in love with the Joplin, one of the largest silicone dildos on the market.