Eastop Dog Head Halter Combination 4 Parts Dog Head Collar Dog HeadCollar Combination 4 Parts Including 4 Parts:1 Mouth Collar,1 Neck Collar,1 Connection,1 Leash SIZE :More Details in the Last Picture, Please choose the right rize,Especially from mouth to nosemouth circumference Material:100% Nylon Perfect to help you on the training of your dog Easy to install