Drawing pad 1.90gsm Brightness:89-90% Smoothness:10/8s Thickness:0.129-0.136mm Bulkness: 1.5×10-3m3/g 2.120gsm Brightness:89-90% Smoothness:7/7s Thickness:0.175-0.180mm Bulkness: 1.5×10-3 m3/g 3.150gsm Brightness: 89-90%Smoothness:10/5s Thickness:0.235-0.240mm Bulkness:1.62×10-3 m3/g