Backpack pet carrier Has expandable sides Approx 17” tall, 11” across the bottom and 13.5” across the top. Fit comfortably up to 20 lbs pet My pet never used it, he outgrew it too fast. So it is new condition. Note: This item is pre-owned. I do my best to list and/or photograph flaws I see, but there may be issues I do not detect. Please review photos and feel free to ask questions before purchasing. Clean, smoke free home ✨