Don’t know where to keep the SIM card and removal pin for your cellphone when you travel abroad? S-keeper uses the elastic characteristic of silicone to easily combine with passport or passport holder. Flip it around when you’re using it to provide safe, convenient storage and access to your SIM card and removal pin. It can also be handily inserted onto your passport or passport holder so that you don’t have to worry about losing your all-important SIM card.