Based on the same design as the Crackstuffers Gooseneck dildo, the plug is very nicely tapered, a long shaft expanding out to a curve, to ensure it stays put. 

Small Goose Plug

Dimensions: Length - 15cm (6") Diameter - 4cm (1.1") Insertable length - 13.5cm, 5.31"

Medium Goose Plug

Dimensions: Length - 18cm (7") Diameter - 6cm (2.4") Insertable length - 16cm, 6.29"

Large Goose Plug

Dimensions: Length - 22cm (8.5") Diameter - 7.5cm (2.95") Insertable length - 19.5cm, 7.67"

Extra Large Goose Plug

Dimensions: Length - 25cm (10") Diameter - 9.5cm (3.74") Insertable length - 21cm, 8.26"

XXL Goose Plug

Dimension: Length - 24cm (9.44") Diameter - 11.5cm (4.52") Insertable length - 19cm (7.48")

Crackstuffers toys are made in a new improved Phthalate free vinyl. They are softer and stronger than before and smell good too! Always use plenty of lube, and they are safe to use with water-based lubes, silicone and oil based lubes such as Crisco.