Preserve your spices, and ensure that they do not lose their freshness, with this Big Mouth spice jar by RSVP. The jar uses a silicone gasket to hermetically seal the spices within it, protecting and preserving them. It is made of durable and clear glass, and is designed to have an angular, unique shape. While it is ideal for use with spices, it can also be re-purposed to house other foods and liquids. Dishwasher safe. 4 Ounce capacity.