Where can I get one of those bags with a zippered main compartment and 3 mag pouches w/snaps on either side?

I just bought one that holds 12 mags, it has 3 pockets on each side that hold 2 30rders in each pocket but it is held closed with a velcro strap and it has a shoulder strap.  I use it as a range mag holder and it serves it's purpose great.  It's from Ace Case it's called the 6 pack #99 and for under $16 it is great.

I know it's not exactly what you asked for but I thought I would give you another option.