Located in the Bavaria region of Germany, family- owned Rosle has been steadily creating the best tools and utensils in the world since 1888. Each Rosle product joins design and function in perfect harmony. 18/10 Stainless steel is used in production providing a professional utensil that is not only aesthetically pleasing, but hygienic, neutral to flavors and odors, easy to clean. During the development phase - which lasts from 1 to 2 years on average - each product goes through a trial period where it is critically evaluated by cooking schools and professional chefs. During production, Rosle utensils go through an elaborate manufacturing processes and only leave the premises after passing strict quality control. Professional and home chefs alike sing the praise of this integrated collection, widely recognized as the best on the market. With German design and unrivaled material, Rosle continues to receive prestigious design prizes and a growing list of awards. Rosle's collapsible colander is made from 18/10 stainless steel and high quality food grade silicone. Sturdy and heat resistant to 392-degree farenheit., colander collapses to the width of one dinner plate to fit right into the dishwasher. When collapsed, silicone folds so that all parts exposed to food remain exposed for cleaning. (Folding mechanism patented) Lifetime warranty.