NO SHOCK – The AmigoPets Dog Bark Collar truly reduces barking, without causing your dog pain. Our collar includes 7 different levels of progressive & humane correction stimuli appropriate for all breeds! HIGHLY ADJUSTABLE – Our high-quality Nylon strap is adjustable up to 55cm, insuring our collar fits even the largest of our furry companions! UPGRADED IMPACT – Our collar is specifically designed to effectively & humanely reduce barking in dogs of all types. The mixture of vibration and sound creates an association your dog will understand easily & pain-free! DURABILITY – We’ve made sure our collar is tough and practical through our use of sturdy materials: Solid plastic for the vibration/sound unit, with a comfortable Nylon strap incorporating two reflective strips for enhanced visibility, so that even the most adventurous pups can’t beat the collar! ACCESSORIES INCLUDED – Each of our collars come equipped with two bespoke covers and a battery, because we believe in not only in quality, but in convenience also.