Childlike, but not childish, this show from Acrobuffos combines simple props and lots of fans, and it's lots of fun. Starring a ring of 16 ordinary office fans and a couple of leaf blowers, a suitcase full of balloons and some very long lengths of cloth, the origins of this show are in the simple but mesmerising way light things fall.

Acrobuffos are Seth Bloom and Christina Gelsone, a married pair of clowns who also form a professional partnership, and hail from New York. Their work is truly international, both in the music (Finnish folk played by Yo Yo Ma, French piano music, an assortment of classical pieces, and a soundscape of dance and static), and in the wordlessness which means they can tour their show anywhere in the world. Watching them interact with the audience and predict exactly how we'll behave gives a reassuring sense of their certainty that people everywhere respond the same way.

There's plenty of audience interaction. At first we just watch and marvel as giant lengths of cloth billow and ripple, fold themselves into columns of flame, and stream out over our heads. Our part is just to be amazed, and the chorus of wows (from all ages) sounds like we're watching fireworks. But then things get more active, and avoiding the front rows will NOT help you - Seth clambers right over everyone to get his balloon back, while participants are chosen from deep in the audience.

Back to the stage and the fans start up again. Inside the ring is a column of air, and balloons rise and fall. Some have helium in, some are weighted. Into the ring go a big and small balloon, and a sudden spray of glitter, and suddenly there was the night sky shimmering with astral bodies. I could have watched it all night. The music was beautifully matched and spacey (and possibly from Holst Planets suite).

Perhaps the climax of the show were the balloons so big Seth and Christina were able to climb inside and bounce around the stage like human spacehoppers. As the balloons, and humans, variously misbehaved, their exaggerated expressions writ large their horror at being literally let down by the props. The show was very funny.

Is it circus? There are elements of traditional clowning, and this show doesn't fit any other category better. It's almost dance, though the dancing is done by the props, and unlike acrobatics the skill is in thinking it all up, not physical feats of contortion to make it happen. Like circus it's definitely playing with the limits of physics, pushing up against them, and achieving something incredible. No words were necessary, which is just as well when all our breath was being taken away.