‘Comfort and safety-with the RIDDER toilet seat booster Sam ‘The RIDDER assistant series ensures a safe and relaxed stay in your bathroom. With these products in particular, we place the highest value on quality and safety, which delivers what it promises in every situation.The majority of our products from the assistant series are constantly tested by TÜV / LGA for safety and freedom from harmful substances in order to guarantee both young and old a safe and comfortable everyday life in the bathroom.Rider assistant - with security. With style.