I purchase last week, the quality is fabulous the design almost perfect for my 6 kg Poodle. She can sit up head out, she can lay down however the flap where the head is when needing to close should be a mesh that breathes better, it is warm in the backpack, the vemts on the side are okay however there should be another vented area or better yet less room for stuff such as iPad and phone and few things and ,ore room for Dog so had more air flow. I put a fan on each side to help. This is almost perfect they just needed more room for Dog, less room for stuff and better ventilation ie lower ventilation area or small dogs to see out and larger dogs for air flow. We’ll made backpack and very light