Review on Explore the Great Outdoors with LAYJENSE Pet Carrier Backpack for Small Dogs and Cats - Expandable and Breathable Design for Comfortable Travel, Hiking, and Outdoor Adventures! by Jessica Morris

Bought this for a hike so I can walk my 11kg cat. As with any stored packaging it had a slight plastic odor but I aired it out before use (24 hours) and it smelled nice afterwards. My cat fits in perfectly and can sit and curl up perfectly. The ventilation in the bag is also a plus for me, and the removable bottom makes cleaning easier. It has a chest strap but is quite high at armpit height. If your cat is a bit heavier, a second bottom strap can be helpful to prevent the bag from kicking back when you are carrying it with your cat inside. Overall, in my experience, this is a comfortable carrier for both owner and cat.