Description: Dog vest harness for outdoor training, running, walking; Adjustle type, can adjust to the perfect size for your dog; Strap mesh belt to keep stable wearing, not easy to drop off; Quick fasteners, easy to take on/off; Great cares for your pet friends Specification: Material: Nylon M- Back length: 41cm/ 16.14inch; Width: 34.5cm/ 13.58inch; Chest Width: 46-79cm/ 18.11-31.10inch; Neck Width: 26-42cm/ 10.24-16.54inch L- Back length: 48cm/ 18.90inch; Width: 38cm/ 14.96inch; Chest Width: 51-90cm/ 20.08-35.43inch; Neck Width: 29-48cm/ 11.42-18.90inch XL- Back length: 53cm/ 20.87inch; Width: 43cm/ 16.93inch; Chest Width: 56-99cm/ 20.05-38.98inch; Neck Width: 31-51cm/ 12.20-20.08inch Package Includes: 1 Piece Dog Harness Note: Due to the Manual Measurement, There is a Slight Difference Between the Size from the above and the Actual Item. Because of the Displaying and Lighting Effects, Monitor Settings,etc.There Could be a Little Color Difference Acceptable, Please Note.