Abstract: A paper folding device (1) adapted to be attached to a digit of a hand comprises a rotatable member (5) attached to the body (2) of the device via a rotatable attachment means (7), whereby the rotatable member (5) rotates in relation to the body (2). The rotatable member (5), in use, is rolled along a fold of pulp based material and communicates pressure from the device (1) to the pulp based material to form a creased line.