This item was used by my miniature schnauzer (7.5kg). It was used indoors, and I would remove it when he used the toilet in his pen because it would get in the way. After he lost his sight, we used it for a while, and he seemed to learn the layout of the room, so he started walking without bumping into things even without wearing it. I'm selling it now that we no longer need it. I hope someone who needs it can use it. It's a very useful product for safety. Retail price: around 5000 yen ■The images from the second one onwards are of the actual product. ■Size unknown (no record of purchase). ■Neck strap: 25cm ■Chest strap: 37cm (The straps are adjustable and can be extended by about 2cm each) ■I washed it once, but it still has a dog smell. ■I've attached fabric (chair leg covers) to the straps that touch the body. ＜Description from the shop where I bought it＞ About this product The pet collision prevention ring is a product designed for pets with blindness. It is lightweight and flexible, allowing visually impaired pets to sense their surroundings and prevent them from bumping into furniture. It comes in a variety of sizes, so you can choose a comfortable vest according to your pet's size. 【Freedom】It boosts your pet's confidence and allows them to move around the space without bumping their head. Hollow belt, breathable and comfortable, double buckle design, double protection, hanging ring, hanging rope can be hung. 【Reusable and Durable】The collision prevention ring can be used repeatedly and is durable even after long-term use. Ultra-lightweight EVA foam material, lightweight, easy to bend, reduces pressure on pets, and reduces health and environmental protection. 【Size】: (approx.) XXS: Nose distance ≤25cm, Bust 30-55cm XS: Nose distance ≤35 cm, Bust 38-62 cm S: Nose distance ≤40cm, Bust 42-80cm; M: Nose distance ≤50cm, Bust 42-80cm; L: Nose distance ≤55cm, Bust 50-95cm The openwork belt breathable design and ultra-lightweight EVA foam material reduce pressure on pets and are healthy and environmentally friendly. When going out, you can hook a rope, and by attaching the button upside down, you can prevent your pet from escaping, and by adjusting the nose distance, it does not affect your pet's daily activities, and they can eat and sleep.