Reusable with added value. The longer a product can be used, the better it is for the environment. GEFU consciously focuses on durable reusable products that help avoid plastic waste and conserve valuable raw materials and energy resources. Thanks to their long lifespan, there is no need for the constant repurchase of environmentally harmful single-use products - good for nature, good for your wallet. Zipzip, hooray! The reusable, airtight class bags for those little hunger pangs in between. Zip up fruits, berries, grapes, nuts, crackers, cookies, and everything you need for snacking at school, work, and on the go.