The Swell has an enhanced curve on the underside to allow you to better apply pressure to those lovely anterior wall bits: the G-spot, Prostate, wherever. It has a branded suction cup base that folds in the hand for an easy, comfortable grip, and is about average size for a penis.
 
Great with a Pommel for strap-on play or just to add vibration, or a Cashew plug as a handle.

Insertable length: 5 3/8"
Widest point: 1 3/8"
Base: 2 1/8"