Guide 01
A bounce house is a sealed, air-filled play structure.
At its simplest, a bounce house is a large fabric structure held up entirely by air. A quiet electric fan — the blower — pushes air in continuously, and the inflated walls and floor turn that air into a springy, bouncy surface kids (and let's be honest, adults) can jump on.
Unlike a balloon, a bounce house is never tied off. The blower runs the whole time it's in use, replacing air that leaks naturally through the seams and stitching. That's by design: the constant airflow keeps the structure firm and safe, and if the power is ever cut, the house deflates slowly and gently rather than popping.
The classic form is a square or castle-shaped box with mesh windows, an entrance ramp or step, and a woven floor that gives just enough to launch a five-year-old about a foot in the air. But the same principle now powers everything from 20-foot water slides to full obstacle courses — more on that in Variations.
The anatomy of one
Blower
A 1–2 horsepower fan that pushes air in continuously. It's the heartbeat of the unit — without it, everything deflates in minutes.
Inflatable body
PVC vinyl panels sewn into pillars, walls, and roofs, shaped into castles, animals, and themed scenes.
Mesh windows
Woven netting that keeps jumpers inside, lets adults see in, and provides airflow so it never gets stuffy.
Bounce floor
A reinforced woven fabric surface — springy underfoot but far softer than any trampoline.
Entrance ramp
An inflated step or slide so kids can climb in safely without help.
Anchors
Stakes, sandbags, or water bags that hold the structure down. Proper anchoring is the single most important safety step.
One thing, many names
Depending on where you grew up, you may know them as bounce houses, bouncy castles, moonwalks, jumpers, or jumping castles. They're all the same idea:
- Bounce house
- The everyday American term for an inflatable play structure.
- Bouncy castle
- The dominant term in the UK, Ireland, Australia, and New Zealand.
- Moonwalk / Moon bounce
- Names that trace back to Bob Regehr's 1968 'Moon Walk' and the space race.
- Space Walk
- The brand name from John Scurlock's original inflatable company, still used in the Gulf South.
- Jumping castle
- Common in South Africa and parts of Asia.
- Closed inflatable trampoline (CIT)
- The technical industry term for an enclosed bounce structure.
Renting one? A few things worth knowing.
- · Always confirm the operator anchors the unit — stakes for grass, weighted bags for hard surfaces.
- · Ask whether the unit is cleaned and sanitized between rentals.
- · Look for members carrying our Safety Verified and Insurance Verified badges in the directory.
- · Never mix age groups: toddlers and ten-year-olds don't belong in the same bounce session.