HerbSafe Containers are the perfect way to safely and securely store your herb from any outside elements such as air, moisture, heat and light. Each airtight canister features four locking clasps for a secure fit, and are made from high grade 304 stainless steel; every opaque container comes with a food grade, BPA-free Polypropylene lid. The one-way pressure release valve helps to keep air and moisture from entering the container, and also allows carbon dioxide to easily escape via the unique aeration system. Retain your plants potency, aroma and freshness with a small or large HerbSafe Canister available at Aqua Lab Technologies today.