If it's girth she wants then you're right on the money with the Sinful Fat Boy.
22cm long with a diameter of 5cm will be touching all the edges
Function: Vibration
Speed: Multi-speed
Material: TPE
Length: 22 CM (8.7'')
Insertable Length: 18 CM ( 7'')
Diameter: 5 CM ( 2'' )
Battery: 2 x AA ( Not Included )
Never worry about him finishing before you...
You can finish whenever & wherever you want