We've gone the extra mile here. We've combined a specialty and durable 600D Fabric and stretch mesh netting. We can confidently say that our airtight bags keep smells and odors firmly locked in and valuable items secure and fresh. For camping and adventure fans, our scent proof bags should be wild dog proof and bear proof. TRIPLE SECURITY: Tough to crack, easy to use. Each of our smell proof bags have 3 enhanced features to keep your products secure: A. Reinforced triple-digit steel combination lock B. Silicon waterproof sealed zipper C. Internal extra-grip fastener.