From the manufacturer: the correct dust bags for all Miele vacuums that are sold in the United States are genuine Miele air clean dust bags. The
MIELE GN Universal XL-8-Pack Dustbag with SUB20 Brush - Kenco Spares
Miele Hyclean 3D Efficiency Dustbag type Gn
2 Boxes Genuine Miele GN HyClean 3D Efficiency Vacuum Bags 4
Bags for Miele Vacuum Cleaners GN HyClean
Miele Hyclean 3D Efficiency Dustbag type Gn
For Miele Classic C1, Complete C2 C3, S2, S5, S8 -3D Efficiency
10 Replacement Bag with 2 Filter for Miele HyClean 3D Efficiency
Miele Hyclean 3D Efficiency XL GN Dustbags - Kenco Spares
Miele 3d Gn C1 C3 Classic Junior Complete Powerline Dust Bags X 20
BIHARNT Replacement Airclean GN 3D Bags Compatible with Miele S2