Manufactured From Unbreakable PVC Plastic They Can be Used Over & Over. to Use Simply Fill with Warm Water, Shape Your Vase, Then Re-Fill with Cold Water to Set. Stores Flat Ideal for Mail Outs or as a Promotional Gift with a Bunch of Flowers. the Large Print Area is Fantastic for Print with Your Brand Name & for Advertising Your Products & Service.Stores Flat & Can Fit into an Envelope Ideal for Mail Outs, Promotional Campaigns or as a Promotional Gift with a Bunch of Flowers. the Large Print Area is Fantastic for Print with Your Brand Name & for Advertising Your Products & Service. Minimum Quantity: 100