Reusable with added value. The longer you can use a product, the better for the environment. GEFU consciously relies on long-lasting reusable products that help avoid plastic waste and conserve valuable raw material and energy resources. Thanks to their long shelf life, there is no need to constantly buy more environmentally harmful disposable products - good for nature, good for your wallet. The cool to-go companion made of robust stainless steel for school, work and on the road. Its double-wall insulation keeps tea or coffee nice and hot for up to 4 hours and water or juices refreshingly cold for up to 8 hours. With practical push-button closure and 100% leak-proof.