Sheriff is an office chair that Mats Theselius designed for Källemo in 2004. The chair's frame is made of steel and the seat of leather from Tärnsjö Garveri. The chair is height-adjustable and tiltable, which means that it fulfills the function and flexibility that an office chair requires, while its design language becomes a distinctive detail in the interior. A recurring theme in Mats Theselius' work is his extensive use of leather in combination with steel in the creation of his products.