McKesson 4 Wheel Rollator Black Adjustable Height / Folding Aluminum Frame (1065266_EA) 1/EASeat and backrest is made of comfortable and durable polyurethane. Loop lock system that makes it easy to slow down or stop folding rollator. Ergonomic handles allow for comfortable use and reduce user fatigue. The handles adjust in height to accommodate different users. Casters allow the McKesson four wheel rollator to move around smoothly. It supports up to 300 lbs. The black rollator folds to a compact size for easy transport, lifting and storage.