100% brand new and high quality -Zipper and Velcro on both sides for easy adjustment; Easy access side zip with Velcro elastic top closure -Breathable mesh fabric, breathable mesh, so that the dog in the pet bag will not be sullen -Built-in leash to attach to the dog collar to prevent your pet from running out -There is a hole in the back to keep the dog's tail out of the bag for more comfort -Additional holder for resizing; fully adjustable shoulder straps with internal strap attachment -It is more convenient and compact to use this backpack when going out with pets, it can be worn on the front or back -This bag is comfortable and breathable, durable, durable and washable, machine washable or hand washable Specification: -Color: as shown -Be applicable: Size S Suitable for back length: 25-29CM/9.84-11.41in Front and rear leg spacing: 10CM/3.93in Size M Suitable for back length: 30-34CM/11.81-13.38in Front and rear leg spacing: 12CM/4.72in Size L Suitable for back length: 35-40CM/13.77-15.74in Front and rear leg spacing: 14CM/5.51in XL size Suitable for back length: 41-45CM/16.14-17.71in Front and rear leg spacing: 16CM/6.29in (The length of the dog's back does not include the neck and tail part) Notice: 1.When choosing the size, please leave an extra 20-30MM for the neck, otherwise your pet may feel uncomfortable 2.Due to light and screen differences, the color may be slightly different from the picture, manual measurement, please allow some differences