Durex Extra Safe Condoms (20). Durex Extra Safe is designed for those who want peace of mind in knowing that the condom they are using is safe.. However, just because you want peace of mind that comes with extra reassurance doesn’t mean you want to sacrifice comfort - and with Extra Safe you don't have too.. Also the special way we make Durex Extra Safe means they smell better so there are no unpleasant distractions, you can relax and enjoy.