Each brick is one-third of the full size and is the only three-pack in the Designer IDEAL range. Supports the arrangement elements and keeps flowers watered. Important to hydrate wet floral foam correctly to avoid trapping air within the foam. When hydrated, wet floral foam can be cut and shaped with a knife, but when dry it is usually too fragile to be worked with easily. For all your Oasis, Strass, or other floral foam questions please see our related resources below.