Holsim Sim Poo is designed to be used with the Holsim Interlocking Bovine. 
 
Sim Poo provides the cow with a realistic representation of excrement inside the rectum, giving the students an accurate tactile experience during AI training.
 
The Artificial Insemination Kit includes a barreling pump to mimic the action of pneumonectomy in cows, and the Sim Poo is used to teach students how to relieve rectum pressure, to avoid being sprayed with Sim Poo.