Medium/Large, Easy Walk Dog Harness, Gently Discourages Your Dog From Pulling On The Leash, When Your Dog Pulls, The Harness Steers Your Dog To The Side & Redirects His Attention Toward You, Rests Across Your Dog's Chest Instead Of His Throat, So There's No Choking Or Gagging, 4 Adjustment Points, Quick Snap Buckles For Easy On, Easy Off.