When stretched, flower arranging grids selfs grips to any smooth surfaced container and removes cleanly after use Package include 1Set Silicone Flower Arranging grids (1piece, 2pieces, 3pieces optional Flower arranging grids was born with a purpose to making gorgeous floral vase arrangements super easy for anyone! It is the easiest way to construct a perfect arrangement with fewer flowers: It maintains structure and prevents flowers flopping to the side of the vase that can happen with long-stemmed flowers in wide mouthed containers Flexible silicone flower arranging grids that stretches over the rim of your favourite vase, making arranging flowers super easy Being washable and, flower arranging grids replaces the need for toxics floral foam, tape or chicken-wire when arranging and allows for water in the vase to be changed regularly Simply slip it off and on again once the water has been replaced without losing the design of the arrangement