The bumper balls have been so much fun for our family to burn energy in our basement during the winter. We brought them out for my daughter’s birthday party and they were a huge hit! My children are 14, 12, and 9 and can all use the larger ones. My husband and I use them too! I use an electric air pump and can have it filled in about 7 minutes. They are durable (just avoid sharp objects obviously) and the straps and handles are good quality.