[Definition] The no-pull harness is worn on the body of the animal. The no-pull harness differs significantly from the standard harness since it makes it harder for the dog to pull because it distributes energy over the dog's back and shoulders. Like the head collar, the no-pull harness does not teach the dog not to pull, it only makes it harder for the dog to pull. [Tool] 
No-pull harness
T r a i n i n g c o l l a r
P r o n g c o l l a r o r p i n c h c o l l a r
R a d i o - c o n t r o l l e d c o l l a r s
M a r t i n g a l e c o l l a r
H e a d c o l l a r
N o - p u l l h a r n e s s
D o g b i t e t u g