When Claesson Koivisto Rune landed the prestigious project to redesign Stockholm’s famous restaurant Operakällaren, at the Royal Opera House, they asked Kasthall to provide the carpet. The previous carpet, designed in 1962, had also been produced by Kasthall. This time, the architects chose to create a wall–to–wall carpet with a subtle pinstripe pattern that softens the tone of the dining room.

We wanted to give this formal restaurant a more relaxed atmosphere and the carpet became our foremost tool. Inspiration came from a picture of the actor Kevis Spacey dressed in a pinstripe suit with an unbuttoned shirt. 'Just like that!', we thought,says Ola Rune.

The result was such a success that we asked Claesson Koivisto Rune to create further colour combinations, and the resulting Pinstripe collection was launched in 2007.