Swimming pools, permanently damp and full of bathers without protective clothing, are expected to provide a high level of cleanliness and hygiene. Right into the corners. For many decades, fillets have been a proven solution to facilitate cleaning in swimming pools. This means that no zones can be created where dirt can easily accumulate. As a counterpart to the edges rounded off with radial strips, also available in two radii, they are also a design feature of soft bathroom architecture and a way of emphasising transitions from floor to wall in colour.