100-pack of Heartsaver Child & Infant Choking Wallet Cards. The Heartsaver Child & Infant Choking Wallet Card is an important resource for childcare professionals, babysitters, families, and anyone who cares for children. Conveniently sized to fit in a wallet or purse, this compact fold-out card illustrates actions for recognizing, responding to, and relieving choking in a child or infant. It also includes the steps for providing CPR if the child or infant becomes unresponsive.