I searched everywhere for something that would fit my dog which had his back leg removed due to mast cell tumors. The "band" type diapers would slide off whenever he would slightly move, one with 2 leg holes that look like pants would also have not full coverage since the leg hole that isn't used would stretch to the bottom. This is the only diaper I could find for him, and I was so glad to have found this. Given, since his one back leg is lame now, so he scoots to walk around, and when he does sometimes the diaper comes off, but most of the time it stays in place. I am glad this company considered that my little amputee pug may need diapers that fit him right too! (-: