Comfortability : very comfortable . material : ok , light , easy to lift the legs and heels , not hard and noisy . just arrived , very satisfied thank you####[([0], [3], 'POS'), ([5], [7], 'POS'), ([5], [9], 'POS'), ([13, 14, 15, 16, 17], [11], 'POS'), ([20], [19], 'POS'), ([22], [19], 'POS')]