998e2bac_n_of_No_Pull_Dog_Training_Aids__2
[0] Harnesses that apply pressure under the front legs or around the belly [1] Sporn Harness Holt Harness Mendota EZ Trainer Lead Lupi Harness ThunderLeash [3] Pretty easy to put on and the dog doesn't generally mind wearing them. [4] Some dogs can get acclimated to the pressure similar to the way they ignore collar pressure. Proper training can help prevent this. In most of these types of harnesses there is no limit to how much they can tighten. We worry could injure a rambunctious dog. (The ThunderLeash has corrected this issue.) [5] 3 out of 10 for most, 6 out of 10 for the ThunderLeash (we are still testing) [2] 
When the dog pulls, a cord or strap tightens around the belly or "armpits" causing discomfort or upward force to inhibit pulling.
Comparison of No-Pull Dog Training Aids
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