We have very active children who just loving jumping around. That is how we decided to purchase a trampoline. We decided that it would be wise for us to invest in a larger size one due to the size of our family and when the kids have their friends over we really have a crowd. It is made of durable and sturdy materials and assembles rather easily. This particular trampoline is 14' and came with the safety enclosure and "bumper pads" as well as the cover that goes over the springs. I know that many people are sceptically of trampolines and injuries, but, I think that this is a great way for children to get exercise and if used properly there is no harm. We paid $328 for this set up on line at Walmart.com. Of course depending on the size of the unit the cost does vary. Never the less I still find this worth every penny!