Our custom jars are created using a combination of a glass machine press and human manipulation to ensure perfect proportions in order for all of the parts to fit together properly. We chose the size and shape of the jar to mirror the size and shape of your cargo. A must have item for home or on the go. This 100% odor proof, airtight, waterproof, ultra-durable glass stash jar is wrapped head to toe in soft protective rubber. They are clearly the most durable glass stash and storage jars on the market. The soft rubber cap slides into a tight fit on the glass creating a very tight seal. Fits in your pocket or purse and a lets you take your your stash anywhere while remaining UNDURCUVUR.