I bought this vest mostly for my (baby) Labrador Myrtle who is now 13 and is still a strong swimmer, but she tires easier now. I am trying to get her used to riding on my latest sit-on-top kayak. At 13 she wasn't really happy to put on a vest, but once it is on she runs around like a puppy knowing she is going kayaking.
The K-9 vest is strong enough and well enough made that I can actually lift a 65lb dog using the handle and not hurt the dog. This is great for getting her into the kayak.
I highly recommend the RuffWear K-9 Float Coat!