This new addition to your reading section will rapidly transform itself from a chair into a mattress. Non-skid bottom. Sanitary: the in-use surface never touches the ground. Folded: Length: 48.2 cm - Width: 59.6 cm - Height: 48.8 cm. Unfolded: Length: 144 cm - Width: 59.6 cm - Height: 37.7 cm.