Using these flower bouquet holders is easy. Just place them in your Eiffel Tower vase or use them for ostrich feather centerpieces. You can insert fresh or dry flowers into the high - dense foam. When handling, note that the plastic handle is made of good - quality, non - recycled and non - smelly material. For maintenance, if you soak the holders in water, dry them thoroughly before reuse. Keep them in a cool, dry place when not in use to ensure their longevity.