This four wheel rollator is a great for people who need an easy-to-use walking aid. The backrest can be folded up and down, and also be removed and reattached if you wish. The rollator comes with a basket to store personal belongings during your travels. The frame is made of a highly durable steel. The handles are ergonomic and easy to grip. They are also height adjustable, and complete with easy-to-use loop locks. The wheels are 7.5-inches in diameter.