Cute dogs also love daily walks in life. This set of Vibrant Fellow breathable soft boots will act as a good partner for them, well providing traction and protecting the paws in daily environment. The whole boot is very soft with the flexible cuff at the top. Please kindly bend the cuff down outwards to put on the boots, and then, recover the cuff after getting the boots on. Then, fasten the boots by straps, capable to prevent slipping off and supply a tightness. Finally, adjust the boots slightly, and they will fit OK. Please measure across the whole paw pad to get the measure of paw width and length, incl all the toes, nails and hair. Practicable Reference Size of X-Large: Inner Sole Length 3.74 Inch, Inner Sole Width 3.15 Inch.