Blossom's Silicone Flower Frog uCaps transform traditional glass Mason jars into stylish Mason jar flower vases. Skillfully arrange fresh flowers from the garden or flowers received as a gift. For fresh flowers, simply fill the Mason jar part way with water, secure Blossom's Flower Frog in place and insert the flower stems through the openings in the lid. In just minutes, create floral arrangements in a jar as decorative home accents, as gifts or lovely Mason jar centerpieces at parties. The Flower Frog is perfect for arranging fresh or artificial flowers, or keeping cut herbs fresh, too. Organize arts and crafts supplies, like pens or pencils, paintbrushes, knitting needles, screwdrivers, and more. The silicone Flower Frog uCaps are durable, reusable and easy to clean. Simply place them on the top rack of the dishwasher. Wide-mouth size. Set of 4.