This high-quality, expanding floral foam, the choice of crafters and florists, increases in size by 200 percent to fill container gaps around floral foam and lock silk flower stems permanently into place. It also can be used to fill any container shape to create a custom design surface. Expanding foam filler is tack-free in 15 minutes and provides an airtight, water-resistant seal to most floral items. Foam filler can be trimmed, sanded or painted as desired and the new, restartable applicator straw allows continued use for up to 30 days. Perfect for creating indoor and outdoor floral arrangements for the home, office or special occasion, including weddings, engagement parties and bridal showers as well as holiday-themed displays. Because the expanding foam is water-resistant, it is especially ideal for graveside memorial arrangements as it prevents floral foam from floating out. Made in the USA.