Better for the Environment. Still Ziploc Fresh These ultra-light bags are made with 25 percent less plastic and manufactured using wind power. Plus Ziploc evolve Storage Bags feature our Smart Zip seal it lets you hear and feel the bag close from edge-to-edge so you can feel confident your food is protected. Better for the environment. Made with 25 percent less plastic. Manufactured using wind power. Secure seal for proven freshness. Perfect for kitchen storage on-the-go storage and more.