Replacement Nose bomb/Earsock kits are available on our site here. As you did not state the model you have it might be that we do not sell the correct kit for your frames. (Only a few models are covered)
If this is the case and we do not sell the correct nose bomb kit for your frames you will have to call Oakley UK for assistance on 01462 475400
If you require any assistance identifying your sunglass model please call us on 0845 456 0435.