This includes one set (two pads) of replacement anti-slip pads for the Nomad Book Weight. 

Installing a new pad is generally a straightforward procedure. The old pad is simply pulled off and a new one stuck on. Any adhesive residue should be removed as best as possible, usually by dabbing the adhesive side of the old pad to pull up any remaining adhesive. A dissolving cleaner may help if the residue is particularly stubborn.