Clear-Window Pet Carrier Backpack A transparent front shell and ventilation openings define this pet backpack. The main photograph shows the rounded window, mesh opening and shoulder-carrying form. The supplier lists 600D Oxford fabric and nylon mesh, adjustable straps with a chest buckle, and a removable double-sided cushion. Gray is the current color, with an advertised maximum pet weight of 18 lb. Details at a glance Listed materials: 600D Oxford fabric and nylon mesh Clear bubble-style window with air openings Adjustable straps, chest buckle and padded back Internal clip-ended tether and removable double-sided cushion shown Gray; supplier-advertised pet-weight maximum: 18 lb Checking size, fit and ventilation Confirm the backpack's internal dimensions and load instructions against your pet's size; an 18 lb maximum alone does not establish a fit. Check the ventilation and restraint instructions. The source says protective film on the shell is removable on purchase. Frequently asked questions What weight limit is advertised? The supplier describes pets up to 18 lb; dimensions and official load instructions still need confirmation. Are the straps adjustable? Adjustable shoulder straps and a chest buckle are listed. Is the cushion removable? Yes. The source describes a removable, double-sided short-plush cushion.