Features 1、Adjustable Design: Body width adjustment plate is fixed at the rear of the fixed frame, 2 width adjustment knobs are slidably mounted in the width adjustment slots, the width adjustment knobs and the heel guard are connected by straps, and 2 wheels are rotatably mounted on opposite sides of the fixed frame. 2、Upgraded Style: The new third generation of upgraded and strengthened models and the second generation of the difference between the two points: 1. The original collar surrounded by the I beam back models. 2. And both sides of the buckle can be adjusted in height. 3、Lightweight Aluminum Alloy Frame: Dog wheelchair for back legs frame is made of lightweight aluminum alloy material, durable and easy to carry. The wheelchair will not interfere with the dog's walking. Provide them with a normal life. 4、Reflective Stripes and Easy To Fix: Dog wheelchair can be designed with reflective stripes and hook and loop design, which not only provides visibility in the dark, but also can be easily fixed anywhere on the stand to prevent your dog from moving or slipping off. 5、Note: If your dog is seriously injured, we may not recommend this wheelchair. Please see your veterinarian for help as soon as possible. Our pet wheelchairs are for healthy pets only and provide mobility for your dog. Good health to your dog . Specifications: Item Type: Dog Wheelchair Material: Aluminum, Iron, Steel Wire, Foam, Polyester Product Size: Body Width: 12-20cm / 4.7-7.9in (adjustable) Body Length: 25-40cm / 9.8-15.7in (adjustable) Body Height: 19-30cm / 7.5-11.8in (adjustable) Reference Chest Circumference: 24-40cm / 9.4-15.7in, Suitable for 4-9kg / 8.8-19.8lb Weight Pets Traction Rope: Approx. 126cm / 49.6in Package List 2 x Wheels 1 x Frame 1 x Collar 1 x Body Strap 1 x Traction Rope 1 x Large Screw 1 x Long Screw 1 x Small Screw 2 x Nut 2 x Washer 2 x Hex Wrench 1 x Storage Box 1 x English Manual 1 x Support Screw