ComfortDrawstring opening neck hole on the top of the backpack to keep your pet stick their head out, make them ventilation and visible, enjoy the entertainment with their host, adjustable hole string and soft mesh padded hole edge to ensure its securityand comfort. Two Ways of Wearing: A hands-free pet carrier can be worn on your front side or your backside if you like, it keeps you closer and increases pet's sense of security when you carry your cat or dog around. Meanwhile, the thickened sponge pad helps to relievethe burden of your shoulder. Enjoy Trips with Your Pet: This backpack carrier is lightweight and portable, you can use it to carry small dogs or cats for biking, hiking, camping, out walking or meeting friends. It allows owners and their lovely pets to have more adventures together,what's more, it's also a great photo prop to take funny pictures for daily sharing.