The Ulfhednar notepad is easily attached with two straps over your arm. The straps are made of “stretch” material and are adjustable. Attaches with Velcro. In addition, there is a Velcro fastener on the back of the notepad, which you can choose to fasten / sew on a jacket arm. The surface can be written on and easily erased again. Inside, there is a blank plastic folder where you can write various notes and / or data.