button[ion-fab] {
overflow: visible;
position: relative;
ion-label {
position: absolute;
top: -8px;
right: 40px;
color: white;
background-color: rgba(0,0,0,0.7);
line-height: 24px;
padding: 4px 8px;
border-radius: 4px;
}
}
.fab{
contain: layout;
}
<ion-fab-list side="top">
<button ion-fab color="danger">
<ion-icon name="information-circle"></ion-icon>
<ion-label>TEXT HERE</ion-label>
</button>
<button ion-fab color="danger">
...
</button>
</ion-fab-list>