Choose the Right Size - There are two sizes to choose from, please choose the right size according to the pet's body size. You'd better measure your pet size before you purchase it, because of different kinds of dog size has some difference.Simple & Effective Accessory for Blind Dogs - The Halo Dog Harness is a simple and effective way to help your vision-impaired dog walk and play. The pet halo will bump into walls, furniture, and even other pets before your dog does.Easy to Put on & Confortable to Wear - This halo for blind dogs comes attached to a vest harness so your pet can wear it easily. The dog vest is adjustable and secured by touch fasteners to ensure that your dog is comfortable as they learn to adapt to their poor vision.Teach Your Blind Dog to Be More Independent - The blind dog halo harness comes attached to a harness or dog vest, depending on dogs size. When the halo makes contact with a hard surface it teaches your dog to change direction and become more familiar with their surroundings.Does not Affect Eating & Sleeping: The size of the anti-collision ring can be fine-turned, and the harness vest can be adjusted. It's very lightweight and flexible, does not affect the dog to eat and sleep, help the dog to live better.Significance: Perfect for walks Blind pets collision ring does not affect daily activities, such as sleep, eating and so on.Breathable and provides high quality comfort.Builds pet's confidence and allows them to navigate spaces without bumping their head.Lightweight, flexible halo for blind pets comes attached to comfortable vest.Features:Color: Vest - Blue Halo - WhiteHalo Diameter: Small - 22 cm (8.6 inch), Suit for dogs weight 4-10 KG (8.8-22 lbs)Medium - 33 cm (13 inch), Suit for dogs weight 11-18 KG (24.2-39.6 lbs)Material: Alloy & SBR & FoamNote:If the item damaged, please contact us firstly immediately before leave feedback, thanks for your understandingDue to hand measure, the size may have 1-2 cm errorDue to Different Monitor, the color may have differencePackage Include:1*Blind Dog Halo