This was really easy to assemble -- it took the promised 15 or so minutes on Christmas morning -- and my almost 4 year old daughter spent about 2 hours jumping on it today (not all at once though!). It's quiet enough that she can jump while her baby sister is sleeping and roomy enough for dance-jumping to music. She sometimes held the handle and sometimes didn't and both seemed safe. I did a lot of research into mini trampolines before buying, like a weird amount, and I'm really glad I went with this one!