The Dog Helios 'Surface' Premium Grip Performance Dog Shoes are built and designed for premium Mobility and Breathability. These durable dog shoes feature a Micro-Mesh, Suede and Nylon outer shell that are Durable, Flexible, Breathable and Water-Resistant with added reflective material by the toe area. Inner lined with both Fleece and Neoprene. The bottom sole features strategic Rubberized micro-grips for Premium traction perfect for protection against the snow, icy terrain, hiking and hot asphalt. Geared with hook-and-loop straps that are further adjustable and reflective. These durable dog shoes are also great when worn during training or any extreme outdoor events and are built-to-last. Our footwear for dogs is available in multiple sizes and colors. Sizing Measurements Guide - (In Inches) - Paw Length x Paw Width XS - Length - 1.2 - 2.5" Width - 1.75" SM - Length - 1.6 - 2.6" Width - 2.0" MD - Length - 2.0 - 2.8" Width - 2.3" LG - Length - 2.4 - 3.0" Width - 2.5" XL - Length - 2.8 - 3.2" Width - 2.8"