The Birthday Cake was made from a relative heavy material which was suitable for outdoor use. The description did not state that a air compressor was needed to inflate it but I discovered this by another review prior to my purchase.Even with an air compressor it took quite along time to inflate it and even longer to deflate it. It was a blast and my wife was really pleased with it as was my friends and neighbors. to celebrate her seventh birtday.It was a good product and well worth the money. I was looking for an inflateable frog but discovered the Birthday Cake. I'm still looking for the frog!