For each bridle and double bridle model there are these different reins to choose from:
soft leather reins with stops inside 
Rubberly reins 
rubber reins 13mm 
rubber reins 16mm 
web reins 16mm with stops 
web reins 20mm with carabiner 
web reins 20mm with stops 
web reins 20mm with 9 stops 
rubber lined web reins 
leather reins with half rubber 13mm 
leather reins with half rubber 16mm 
plain leather reins 
leather reins 13mm with stops 
leather reins 16mm with stops 
leather reins 20mm with stops