functionality : comfortable . material : not so bad . the quality equivalent to the price . don ' t expect too much when you are paying less . easy to install but the material quality just fine . hope the mesh net for back support will last long . and overall it ' s comfortable for those who work from home or for study . anyway thanks seller .####[([0], [2], 'POS'), ([4], [6, 7, 8], 'POS'), ([11], [12, 13, 14, 15], 'POS'), ([31], [29], 'POS'), ([34, 35], [37], 'POS'), ([56, 57, 58, 59, 60, 61], [55], 'POS'), ([63, 64], [55], 'POS')]