Zoo safety harness -zoo safety harness is a mini backpack with a detachable rein for the smallest travelers. Friendly zoo faces, adjustable pack straps, a top grab handle and the secure easy-to-attach rein, all keep walks around the block safe and fun. Take off the rein and your little one will feel like a big kid with his own mini backpack. ExpirationThis product has no expiration date or the manufacturer has not provided an expiration date.