Did it fool you? It fooled me! It's amazing how the smallest details trigger your perceptions. These cute pincushions by Alesina Design appear to be inflated by air, but are in fact filled with polyester fibers. Can simple elements within a design, such as these air valves, entirely change your perception of an object? For sure! I'd love to see more examples of visual triggers like this one. As far as I know, these colorful soft objects might be hard painted pieces of concrete, but who knows.
update: seems you can buy these through this company, kikkerland.