Pet Life Shearling Duggz Paw Wear (features 3M Thinsulate): Blue, Medium Features a Back Zipper and Wrap Around Velcro for Easy On Off access and added support and comfortFeatures Rubberized GripsEssential for Dogs in Recovery and especially elder dogs and puppiesSizing Instructions: Measure the Sole of your Pets Foot - Length * Width ("In" Inches): XS: 25 SM: 2