MATERIAL AND STRUCTURE-The surface is made of high intensity polyester which is lightweight,non-toxic,durable & washable.The underneath is the mesh material which is breathable,skin-friendly,soft & comfortable to wear.And the sturdy fabric with soft edges invoid to chafe the doggie's body.The Triangle construction makes our heavy-duty harness much more stable & durable. SPONGE FILLING ANTI CHOKE & PULL-Thick sponge filled padded in chest and belly can effectively reduce and spread out the pressure to prevent your lovely pet from hurt or choke when he/she heads forward abruptly.Our dog vest harness reduce the tugging & pulling on pet's body and make them comfortable & ease. FASHION & PRACTICAL HANDLE-Our no-pull harness use hard plastic handle,strength enough to raise up the large breeds.You can help your dog up and over the obstacles during training or hiking.4 flutes for putting fingers underneath the cool handle which brings you comfortable. ADJUSTABLE TO SNUG FIT-The sturdy straps on the chest and belly position have 2 points of adjustments,which allows you to adjust to a suitable tightness for your dogggie's everyday walks. SIZE-The dog vest harness set incluses one harness and one leash .Leash length 45",leash width 1",hook length 3".Harness size M: chest girth 24"-33" ,half neck girth 18"-20"; Size L: chest girth 27"-38",half neck girth 21"-24";Size XL: chest girth 32"-46" ,half neck girth 24"-27".Please measure your pet before ordering.