998e2bac_n_of_No_Pull_Dog_Training_Aids__2
[0] Limited Slip Collar or Limited Choke Collar or Martingale Collar [1] Premier Collar [3] Dog doesn't generally mind having it put on. Prevents escape due to backing out of the collar when properly fitted. Does not choke when properly fitted. [4] Not very effective at reducing pulling in most dogs and puts a lot of pressure on the trachea if the dog pulls. Can be a good regular walking collar for dogs that do not pull or as a back up for a harness. [5] 3 out of 10 (for reducing pulling; it is a good collar for other purposes.) [2] 
When the dog pulls, a cord or chain tightens around the dog's neck which is unpleasant and discourages him from pulling. (When fitted properly the collar will not tighten down enough to choke.)
Comparison of No-Pull Dog Training Aids
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