The most sophisticated outdoor lounging system ever produced, MU combines the seating technology, modular logic and more compact proportions of the best indoor systems with the lightness, strength and weatherresistance only can deliver. With rear wheels and a smoothly-adjusting back, activated by gas spring at the press of a button, the MU beach chair offers exceptional comfort, convenience and handling ease. Frame Maintenance: Clean with a soft cloth and warm water. Cushion Maintenance: All cushion covers can be removed and washed.