Safe for pets up to 16 lbs . Measures 11.5" WX 20.5" H X 11.5" D * Use 3 ways! to keep pet safe and protected from the elements while traveling- fully open , with a mess in place, or w protective cover. * zipper top & bottom. Two mesh side pockets w elasticized trim stores water, food, or accessories. * Heavy duty nylon w mesh windows on top and side. Padded bottom and side for ultimite comfort. * Adjustable backpack straps. Ergonomic carry handle w comfort grip. Comfort pad included. Great for trips to the vet , a bicycle ride or motor scooter, walking in city, etc.