When the player first obtains the trousers they are damaged and must be repaired. Players need to take 2 silks and a bear fur to Oronwen, the Elven Seamstress in Lletya, to have the trousers repaired. Her excellent sewing ability requires just under 2 minutes for each set of trousers you wish to repair. If you already have a full mourner's set you can enter the Mourner's headquarters and go to the basement and kill a level 122 Mourner to get another Mourner's set, including a pair of trousers that will not need to be repaired. They give no bonuses.