the pets weight, it is looking for measurements. see below and measure the areas of pet.
small: body 8.7", chest 18.1-21.6", neck 16.9-19.7"
medium: body 9.8", chest 20.5-24.8", neck 19.3-23.2"
large: body 11.7", chest 23.2-28.3", neck 23.2-27.6"
is this just for the back legs the picture shows one for the front to, i would need both, and if using both would i be able to lift a large dog and carry down stairs if i had to ?
best answer: this is just the back portion.
what size would i get for a dog that weights 60-70 pounds?
best answer: these are not sized by weight you will need to measure your dog. here is how. 