KABACASE™ card case has a patented design that allows to open and closed with one hand. Simply press down inside the clear circle to flip the case open. You can even "thumb-out" cards with one hand and offer it this way to your conversation partner without the need to put down your briefcase. To close, flip the lid back and press it down with a snap. The cases are translucent and have a silky smooth finish with rounded corners that make it feel good in your hands.