Secure and Comfortable: The adjustable drawstring closure allows your pet to keep their head out to enjoy the fresh air and beautiful scenery. In addition, the safety buckle design allows you to adjust the shoulder strap to your comfort. Top opening for easy access. Premium Quality: High quality oxford material, premium canvas, heat-processable mesh fabric, no pungent smell. Built-in hook can connect to pet's collar for safer carrying. Details: Durable and lightweight design, large zipper provides easy access for pets, velcro makes it safer for pets. Practical: With a side pocket on the adjustable shoulder strap, it is very convenient for storing a phone or other small items. Size S: Shoulder strap length: 109cm. For pets up to about 4kg, size: 40*22*10CM, great for outdoors, walking, strolling, traveling, lets you see the world with your pet by your side.