Features:Made of soft thick PU leather material, comfortable, wear-resistant and durable.Spikes on the collar protect your dog's neck from bites, also avoid hurting others.These spikes are not overly sharp, make your dog look cool but does not hurt your pet's skin.Mulit holes make this collar adjustable to fit comfortably on your dog's neck.Heavy duty D-ring for leash attachment. Ideal for dog walking and trianing.Specification:Item name: Studded Dog CollarMaterial: PU LeatherColor: Black Spikes, Golden Spikes (Optional)Product size: XS, S, M, L (Optional)- XS: 5cm * 51cm / 2" * 20"- S: 5cm * 56cm / 2" * 22"- M: 5cm * 61cm / 2" * 24"- L: 5cm * 66cm / 2" * 26"Note:Please allow 1-3cm (0.4-1.18") difference due to manual measurement and slight color variation for different display setting.