My golden retriever is 10 yrs old and was having a little trouble at times jumping in and out of my SUV.  Tried a ramp and he didn't like it so I tried these.  They are great and he using them easily to get up and down to the vehicle. Nice and light to handle when putting them in and out of the SUV so no heavy lifting for me.  He really just goes up and down in a blink so they were definitely a very good buy.