A young man is jumping on a trampoline  when he does a back flip.
A person bounces on a trampoline and performs a flip.
A man is jumping on a trampoline and does a double back flip then lands on his feet.
On a backyard trampoline, a young boy performs a big backflip.
A boy on a home video does a back flip on a trampoline.
Someone bounces a few times on a trampoline and completes a full back flip.
A person is bouncing and doing flips on a trampoline.
a kid jumping on a trampoline doing a front flip outdoors
A person jumps on a trampoline a few times before jumping up and flipping in the air.
A young man jumps on a trampoline  and does a back flip in to the air.