New from Genicook. Geni-fresh containers are our most innovative piece of kitchen technology yet. Each geni-fresh container is made from our signature borosilicate glass paired with our air-tight Snap-On lids with a silicone valve in the center. The valve is used in collaboration with our vacuum pump not included with this product which removes the air out of your container after you close it. This is proven to keep food fresher and longer. Say goodbye to single-use containers, our products are built to last and are dishwasher, microwave, and oven safe.