As I mentioned in the video, the leash comes in two sizes: small for dogs 12-25 pounds, and large for dogs larger than 25 pounds. Venus is around 15 pounds, and I found it worked very well for her. We use her ThunderLeash all the time now.
I honestly have no complaints about the leash. I think it's an excellent product, even if you don't have a problem puller.
The ThunderLeash is sold on the their website for $29.95; ; and connect with ThunderWorks on Facebook, Twitter, and YouTube.
Disclaimer: I was sent the product(s) mentioned in this post for review purposes only. I was not compensated for my review. I have provided an honest review using an opinion that is 100% my own.