Step 1: 1: Stuff Your Gonna Need!
HOCKEY OR MASKING TAPE
A DS CASE WITH 3 DS CARD HOLDERS AND WITH A BAND THAT 'HELD' THE DS!
Step 2: ZIPPER
Step 3: STAPLER + BAND=
SO now u take the band and staple it at the ends of the band it should be able to strech around it ...it is also supposed to be tight!! very tight so it dosn't slip out if it does then re staple it !