An excellent price / quality ratio for this bag I have used many times and here are the advantages: - This bag is big enough for my (big) cat 6.5kg: it may indeed lie down no problem, and turn around. - The parties "screened" are strong, flexible plastic, enough to blackout the cat feel protected, but still allowing him to see well its environment - The substance is not completely rigid, but he did not collapse, not many arches under the weight of the animal. - The strap to wear the shoulder is wide and comfortable. Carabiners and hooks are metal. This bag probably should not go on a ride for hours, but it is ideal for walking to the vet for example. I have noticed no wear marks (seams, plastic, fabrics ...) after ten uses.