The Pet Life Aero Mesh 2-In-1 Dual Sided Comfortable And Breathable Adjustable Mesh Dog Leash And Collar Is Sold As A 2-Piece Matching Set The Aero Mesh Collar-Leash Offers Complete Comfort And Ventilation Throughout With Dual-Sided Premium Micro-Mesh Plush Fabrics That Are Fused Together To Create Exceptional Breathability Superior In Comfort As Compared To Conventional Nylon Or Tougher-Grade Fabrics That Place More Stress Around The Neck And Hand Area, This Leash Gently Cuddles And Places Less Stress Around The Neck And Hand For A More Comfortable Tug And Pull Features Reinforced Matched Stitching All Around With A Stainless Steel Swivel Hook On The Leash For Multi-Directional Pull That Connects To A Stainless Steel Ring On The Collar That Is Meant To Withstand High Tug Pressure Leash And Collar Is 100% Water-Resistant And Machine Washable Available In Multiple Sizes And Colors Sold Together Sizing Dimensions: In Inches Small: Neck Circumference: 11 - 158 Leash Length: 50 Medium: Neck Circumference: 134 - 198 Leash Length: 50 Large: Neck Circumference: 149 - 232 Leash Length: 50