The Dog Helios 'Surface' Premium Grip Performance Dog Shoes are built and designed for premium Mobility and Breathability. These sporty dog sneakers feature a Micro-Mesh, Suede and Nylon outershell 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 shoes are also great when worn during training or any extreme outdoor events and are built-to-last. 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"